Many of the nearly 3,000 migrants who have reached the border with California say they do not feel welcome in the Mexican city of Tijuana.

The vast majority were camped out at a sports complex, sleeping on a dirt baseball field and under bleachers. The city opened the complex after other shelters were filled to capacity. Church groups provided portable showers, bathrooms and sinks — and handed out coffee and doughnuts.

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A boy plays soccer at the Mexican side of the border with the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

Many of the nearly 3,000 migrants who have reached the border with California say they do not feel welcome in the Mexican city of Tijuana.

Musicians talk to tourists after performing at the Mexican side of the border with the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

It's a stark contrast to the many Mexican communities that welcomed the caravan with signs, music and donations of clothing after it entered Mexico nearly a month ago.

U.S. Border Patrol agents are seen though the border structure from the Mexican side at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

U.S. Border Patrol agents are seen though the border structure from the Mexican side at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

People hang out at the Mexican side of the border structure that separates Mexico from the U.S., at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

People hang out at the Mexican side of the border structure that separates Mexico from the U.S., at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

Musicians called "Talismanes de Tijuana" wait for customers near the border structure between Mexico and the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

Musicians called "Talismanes de Tijuana" wait for customers near the border structure between Mexico and the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

Central American migrant Cristian Andino, 16, from Honduras, gets down from the border structure installed in the Pacific Ocean in Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

Central American migrant Cristian Andino, 16, from Honduras, gets down from the border structure installed in the Pacific Ocean in Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

But the mayor has called the migrants' arrival an "avalanche" that the city is ill-prepared to handle, while some locals have shouted insults.

A boy plays soccer at the Mexican side of the border with the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

A boy plays soccer at the Mexican side of the border with the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

It's a stark contrast to the many Mexican communities that welcomed the caravan with signs, music and donations of clothing after it entered Mexico nearly a month ago.

Musicians talk to tourists after performing at the Mexican side of the border with the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

Musicians talk to tourists after performing at the Mexican side of the border with the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

U.S. Border Patrol agents are seen though the border structure from the Mexican side at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

U.S. Border Patrol agents are seen though the border structure from the Mexican side at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

People hang out at the Mexican side of the border structure that separates Mexico from the U.S., at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

People hang out at the Mexican side of the border structure that separates Mexico from the U.S., at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

Musicians called "Talismanes de Tijuana" wait for customers near the border structure between Mexico and the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

Musicians called "Talismanes de Tijuana" wait for customers near the border structure between Mexico and the U.S. at the Pacific Ocean, Tijuana, Mexico, Friday, Nov. 16, 2018. As thousands of migrants in a caravan of Central American asylum-seekers converge on the doorstep of the United States, what they won't find are armed American soldiers standing guard. (AP PhotoRodrigo Abd)

Central American migrant Cristian Andino, 16, from Honduras, gets down from the border structure installed in the Pacific Ocean in Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)

Central American migrant Cristian Andino, 16, from Honduras, gets down from the border structure installed in the Pacific Ocean in Tijuana, Mexico, Friday, Nov. 16, 2018. With about 3,000 Central American migrants having reached the Mexican border across from California and thousands more anticipated, the mayor of Tijuana said Friday that the city was preparing for an influx that will last at least six months and may have no end in sight. (AP PhotoRodrigo Abd)