NEW YORK (AP) — Columbia canceled in-person classes, dozens of protesters were arrested at New York University and Yale, and the gates to Harvard Yard were closed to the public Monday as some of the most prestigious U.S. universities sought to defuse campus tensions over Israel's war with Hamas.
More than 100 pro-Palestinian demonstrators who had camped out on Columbia’s green were arrested last week, and similar encampments have sprouted up at universities around the country as schools struggle with where to draw the line between allowing free expression while maintaining safe and inclusive campuses.
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NEW YORK (AP) — Columbia canceled in-person classes, dozens of protesters were arrested at New York University and Yale, and the gates to Harvard Yard were closed to the public Monday as some of the most prestigious U.S. universities sought to defuse campus tensions over Israel's war with Hamas.
A Pro-Palestinian protester holds a Palestinian flag while in front of Sproul Hall during a protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinian protesters gather in front of Sproul Hall during a protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinians protesters begin to set up tents in front of Sproul Hall during a planned protest on the campus of UC Berkeley in Berkeley, Calif., Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
UC Berkeley law student Malak Afaneh speaks to a large crowd of pro-Palestinian protesters during a protest on the campus of UC Berkeley in Berkeley, Calif., Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinian protesters gather in front of Sproul Hall during a planned protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinian protesters gather in front of Sproul Hall during a protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
A sign sits erected at the Pro-Palestine protest encampment at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah) (AP Photo/Stefan Jeremiah)
A sign is displayed in front of the tents erected at the Pro-Palestine protest encampment at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
Tents stand erected at the Pro-Palestine protest encampment at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah) (AP Photo/Stefan Jeremiah)
Congressman Jared Moskowitz with Congresswoman Kathy Manning, Congressman and Congressman Dan Goldman, speaks at a press conference regarding recent anti-semitism directed towards jewish students studying at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Massachusetts Institute of Technology student Isa Liggans, of Odenton, Md., front left, takes part in Muslim prayer with others Monday, April 22, 2024, at an encampment of tents at MIT, in Cambridge, Mass. Students at MIT set up the encampment of tents on campus to protest what they said was MIT's failure to call for an immediate ceasefire in Gaza and to cut ties to Israel's military. (AP Photo/Steven Senne)
Congressman Josh Gottheimer with Congressman Jared Moskowitz, Congresswoman Kathy Manning and Congressman Dan Goldman, speaks at a press conference regarding recent anti-semitism directed towards jewish students studying at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University professors rally in solidarity with their students rights to protest free from arrest at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
Student protesters sit in front of a tent during the Pro-Palestinian protest at the Columbia University campus in New York, Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
New York University students and pro-Palestinian supporters rally outside the NYU Stern School of Business building, Monday, April 22, 2024, in New York. (AP Photo/Mary Altaffer)
Congressman Josh Gottheimer with Congresswoman Kathy Manning speaks at a press conference regarding recent anti-semitism directed towards jewish students studying at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
The New School students and pro-Palestinian supporters rally outside The New School University Center building, Monday, April 22, 2024, in New York. (AP Photo/Mary Altaffer)
New York University students and pro-Palestinian supporters rally outside the NYU Stern School of Business building, Monday, April 22, 2024, in New York. (AP Photo/Mary Altaffer)
A Massachusetts Institute of Technology student, center, does school work on his computer while seated with others, Monday, April 22, 2024, at an encampment of tents on the MIT campus, in Cambridge, Mass. Students at MIT set up the encampment to protest what they said was MIT's failure to call for an immediate ceasefire in Gaza and to cut ties to Israel's military. (AP Photo/Steven Senne)
A sign outside Harvard Yard warns that only those with Harvard IDs can enter the yard, outside Harvard University Monday, April 22, 2024, in Cambridge, Mass. The sign also cautions that any structures, like the tents and tables used at protests at other colleges, aren't allowed without permission and students caught violating the policies are subject to disciplinary action. (AP Photo/Steve LeBlanc)
Columbia University professors speak in solidarity with their students rights to protest free from arrest at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
Deputy Commissioner of Legal Matters Michael Gerber speaks at a press conference regarding recent Israel-Palestinian protests at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, reads the names of Israeli hostages held by Hamas after being denied access to the main campus, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Yale University Police remain at Beinecke Plaza following the arrest of pro-Palestinian supporters in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Several hundred students and pro-Palestinian supporters rally at the intersection of Grove and College Streets, in front of Woolsey Hall on the campus of Yale University in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Several hundred students and pro-Palestinian supporters rally at the intersection in front of Woolsey Hall on the campus of Yale University in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Several hundred students and pro-Palestinian supporters rally at the intersection of Grove and College Streets, in front of Woolsey Hall on the campus of Yale University in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, left, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, reads the names of Israeli hostages held by Hamas after being denied access to the main campus, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, speaks after being denied access to the main campus, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators, in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Pro-Israel demonstrators chant "Shame" in support of Columbia University assistant professor Shai Davidai, who was denied access to the main campus to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
FILE - New York City police in riot gear stand guard outside the Columbia University campus after clearing the campus of protesters, April 18, 2024, in New York. Columbia University canceled in-person classes Monday, April 22, 2024 and police arrested several dozen protesters at Yale University as tensions on U.S. college campuses continue to grow over the war in the Middle East. (AP Photo/Mary Altaffer, file)
FILE - A woman walks by a Yale sign reflected in the rainwater on the Yale University campus, Aug. 22, 2021, in New Haven, Conn. Columbia University canceled in-person classes Monday, April 22, 2024 and police arrested several dozen protesters at Yale University as tensions on U.S. college campuses continue to grow over the war in the Middle East. (AP Photo/Ted Shaffrey, File)
At New York University, an encampment set up by students swelled to hundreds of protesters throughout the day Monday. The school said it warned the crowd to leave, then called in the police after the scene became disorderly and the university said it learned of reports of “intimidating chants and several antisemitic incidents.” Shortly after 8:30 p.m., officers began making arrests.
“It’s a really outrageous crackdown by the university to allow the police to arrest students on our own campus," said New York University law student Byul Yoon.
“Antisemitism is never OK. That’s absolutely not what we stand for and that’s why there are so many Jewish comrades that are here with us today,” Yoon said.
The protests have pitted students against one another, with pro-Palestinian students demanding that their schools condemn Israel's assault on Gaza and divest from companies that sell weapons to Israel. Some Jewish students, meanwhile, say much of the criticism of Israel has veered into antisemitism and made them feel unsafe, and they point out that Hamas is still holding hostages taken during the group's Oct. 7 invasion.
Tensions remained high Monday at Columbia, where the campus gates were locked to anyone without a school ID and where protests broke out both on campus and outside.
U.S. Rep. Kathy Manning, a Democrat from North Carolina who was visiting Columbia with three other Jewish members of Congress, told reporters after meeting with students from the Jewish Law Students Association that there was “an enormous encampment of people” who had taken up about a third of the green.
“We saw signs indicating that Israel should be destroyed,” she said after leaving the Morningside Heights campus. Columbia announced Monday that courses at the Morningside campus will offer virtual options for students when possible, citing safety as their top priority.
A woman inside the campus gates led about two dozen protesters on the street outside in a chant of, "From the river to the sea, Palestine will be free!” — a charged phrase that can mean vastly different things to different groups. A small group of pro-Israel counter demonstrators protested nearby.
University President Minouche Shafik said in a message to the school community Monday that she was “deeply saddened” by what was happening on campus.
“To deescalate the rancor and give us all a chance to consider next steps, I am announcing that all classes will be held virtually on Monday,” Shafik wrote, noting that students who don’t live on campus should stay away.
Protests have roiled many college campuses since Hamas’ deadly attack on southern Israel, when militants killed about 1,200 people, most of them civilians, and took roughly 250 hostages. During the ensuing war, Israel has killed more than 34,000 Palestinians in the Gaza Strip, according to the local health ministry, which doesn’t distinguish between combatants and non-combatants but says at least two-thirds of the dead are children and women.
On Sunday, Elie Buechler, a rabbi for the Orthodox Union’s Jewish Learning Initiative at Columbia, sent a WhatsApp message to nearly 300 Jewish students recommending they go home until it’s safer for them on campus.
The latest developments came ahead of the Monday evening start of the Jewish holiday of Passover.
Nicholas Baum, a 19-year-old Jewish freshman who lives in a Jewish theological seminary building two blocks from Columbia's campus, said protesters over the weekend were "calling for Hamas to blow away Tel Aviv and Israel.” He said some of the protesters shouting antisemitic slurs were not students.
“Jews are scared at Columbia. It’s as simple as that," he said. “There’s been so much vilification of Zionism, and it has spilled over into the vilification of Judaism.”
The protest encampment sprung up at Columbia on Wednesday, the same day that Shafik faced bruising criticism at a congressional hearing from Republicans who said she hadn't done enough to fight antisemitism. Two other Ivy League presidents resigned months ago following widely criticized testimony they gave to the same committee.
In her statement Monday, Shafik said the Middle East conflict is terrible and that she understands that many are experiencing deep moral distress.
“But we cannot have one group dictate terms and attempt to disrupt important milestones like graduation to advance their point of view,” Shafik wrote.
Over the coming days, a working group of deans, school administrators and faculty will try to find a resolution to the university crisis, noted Shafik, who didn't say when in-person classes would resume.
U.S. House Republicans from New York urged Shafik to resign, saying in a letter Monday that she had failed to provide a safe learning environment in recent days as “anarchy has engulfed the campus.”
In Massachusetts, a sign said Harvard Yard was closed to the public Monday. It said structures, including tents and tables, were only allowed into the yard with prior permission. “Students violating these policies are subject to disciplinary action,” the sign said. Security guards were checking people for school IDs.
The same day, the Harvard Undergraduate Palestine Solidarity Committee said the university’s administration suspended their group. In the suspension notice provided by the student organization, the university wrote that the group's April 19 demonstration had violated school policy, and that the organization failed to attend required trainings after they were previously put on probation.
The Palestine Solidarity Committee said in a statement that they were suspended over technicalities and that the university hadn't provided written clarification on the university's policies when asked.
“Harvard has shown us time and again that Palestine remains the exception to free speech," the group wrote in a statement.
Harvard did not respond to an email request for comment.
At Yale, police officers arrested about 45 protesters and charged them with misdemeanor trespassing, said Officer Christian Bruckhart, a New Haven police spokesperson. All were being released on promises to appear in court later, he said.
Protesters set up tents on Beinecke Plaza on Friday and demonstrated over the weekend, calling on Yale to end any investments in defense companies that do business with Israel.
In a statement to the campus community on Sunday, Yale President Peter Salovey said university officials had spoken to the student protesters multiple times about the school’s policies and guidelines, including those regarding speech and allowing access to campus spaces.
School officials said they gave protesters until the end of the weekend to leave Beinecke Plaza. The said they again warned protesters Monday morning and told them that they could face arrest and discipline, including suspension, before police moved in.
A large group of demonstrators regathered after Monday's arrests at Yale and blocked a street near campus, Bruckhart said. There were no reports of any violence or injuries.
Prahlad Iyengar, an MIT graduate student studying electrical engineering, was among about two dozen students who set up a tent encampment on the school’s Cambridge, Massachusetts, campus Sunday evening. They are calling for a cease-fire and are protesting what they describe as MIT’s “complicity in the ongoing genocide in Gaza,” he said.
Perry reported from Meredith, New Hampshire, and Collins reported from Hartford, Connecticut. Associated Press writers Steve LeBlanc in Boston and Susan Haigh in Hartford contributed to this report.
Pro-Palestinian protesters begin to set up tents in front of Sproul Hall during a planned protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
A Pro-Palestinian protester holds a Palestinian flag while in front of Sproul Hall during a protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinian protesters gather in front of Sproul Hall during a protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinians protesters begin to set up tents in front of Sproul Hall during a planned protest on the campus of UC Berkeley in Berkeley, Calif., Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
UC Berkeley law student Malak Afaneh speaks to a large crowd of pro-Palestinian protesters during a protest on the campus of UC Berkeley in Berkeley, Calif., Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinian protesters gather in front of Sproul Hall during a planned protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
Pro-Palestinian protesters gather in front of Sproul Hall during a protest on the campus of UC Berkeley in Berkeley, Calif., on Monday, April 22, 2024. Hundreds of pro-Palestinian protesters staged a demonstration in front of Sproul Hall where they set up a tent encampment and are demanding a permanent cease-fire in the war between Israel and Gaza. (Jose Carlos Fajardo/Bay Area News Group via AP)
A sign sits erected at the Pro-Palestine protest encampment at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah) (AP Photo/Stefan Jeremiah)
A sign is displayed in front of the tents erected at the Pro-Palestine protest encampment at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
Tents stand erected at the Pro-Palestine protest encampment at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah) (AP Photo/Stefan Jeremiah)
Congressman Jared Moskowitz with Congresswoman Kathy Manning, Congressman and Congressman Dan Goldman, speaks at a press conference regarding recent anti-semitism directed towards jewish students studying at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Massachusetts Institute of Technology student Isa Liggans, of Odenton, Md., front left, takes part in Muslim prayer with others Monday, April 22, 2024, at an encampment of tents at MIT, in Cambridge, Mass. Students at MIT set up the encampment of tents on campus to protest what they said was MIT's failure to call for an immediate ceasefire in Gaza and to cut ties to Israel's military. (AP Photo/Steven Senne)
Congressman Josh Gottheimer with Congressman Jared Moskowitz, Congresswoman Kathy Manning and Congressman Dan Goldman, speaks at a press conference regarding recent anti-semitism directed towards jewish students studying at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University professors rally in solidarity with their students rights to protest free from arrest at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
Student protesters sit in front of a tent during the Pro-Palestinian protest at the Columbia University campus in New York, Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
New York University students and pro-Palestinian supporters rally outside the NYU Stern School of Business building, Monday, April 22, 2024, in New York. (AP Photo/Mary Altaffer)
Congressman Josh Gottheimer with Congresswoman Kathy Manning speaks at a press conference regarding recent anti-semitism directed towards jewish students studying at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
The New School students and pro-Palestinian supporters rally outside The New School University Center building, Monday, April 22, 2024, in New York. (AP Photo/Mary Altaffer)
New York University students and pro-Palestinian supporters rally outside the NYU Stern School of Business building, Monday, April 22, 2024, in New York. (AP Photo/Mary Altaffer)
A Massachusetts Institute of Technology student, center, does school work on his computer while seated with others, Monday, April 22, 2024, at an encampment of tents on the MIT campus, in Cambridge, Mass. Students at MIT set up the encampment to protest what they said was MIT's failure to call for an immediate ceasefire in Gaza and to cut ties to Israel's military. (AP Photo/Steven Senne)
A sign outside Harvard Yard warns that only those with Harvard IDs can enter the yard, outside Harvard University Monday, April 22, 2024, in Cambridge, Mass. The sign also cautions that any structures, like the tents and tables used at protests at other colleges, aren't allowed without permission and students caught violating the policies are subject to disciplinary action. (AP Photo/Steve LeBlanc)
Columbia University professors speak in solidarity with their students rights to protest free from arrest at the Columbia University campus in New York on Monday April 22, 2024. (AP Photo/Stefan Jeremiah)
Deputy Commissioner of Legal Matters Michael Gerber speaks at a press conference regarding recent Israel-Palestinian protests at Columbia University in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, reads the names of Israeli hostages held by Hamas after being denied access to the main campus, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Yale University Police remain at Beinecke Plaza following the arrest of pro-Palestinian supporters in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Several hundred students and pro-Palestinian supporters rally at the intersection of Grove and College Streets, in front of Woolsey Hall on the campus of Yale University in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Several hundred students and pro-Palestinian supporters rally at the intersection in front of Woolsey Hall on the campus of Yale University in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Several hundred students and pro-Palestinian supporters rally at the intersection of Grove and College Streets, in front of Woolsey Hall on the campus of Yale University in New Haven, Conn. April 22, 2024. (Ned Gerard/Hearst Connecticut Media via AP)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, left, is denied access to the main campus after his security card was deactivated, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, reads the names of Israeli hostages held by Hamas after being denied access to the main campus, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Columbia University assistant professor Shai Davidai, speaks after being denied access to the main campus, to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators, in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
Pro-Israel demonstrators chant "Shame" in support of Columbia University assistant professor Shai Davidai, who was denied access to the main campus to prevent him from accessing the lawn currently occupied by pro-Palestine student demonstrators in New York on Monday, April 22, 2024. (AP Photo/Stefan Jeremiah)
FILE - New York City police in riot gear stand guard outside the Columbia University campus after clearing the campus of protesters, April 18, 2024, in New York. Columbia University canceled in-person classes Monday, April 22, 2024 and police arrested several dozen protesters at Yale University as tensions on U.S. college campuses continue to grow over the war in the Middle East. (AP Photo/Mary Altaffer, file)
FILE - A woman walks by a Yale sign reflected in the rainwater on the Yale University campus, Aug. 22, 2021, in New Haven, Conn. Columbia University canceled in-person classes Monday, April 22, 2024 and police arrested several dozen protesters at Yale University as tensions on U.S. college campuses continue to grow over the war in the Middle East. (AP Photo/Ted Shaffrey, File)
