The Rev. Robert Graetz, the only white minister to support the Montgomery bus boycott, died Sunday. He was 92.

His daughter, Meta Ellis, shared the news in a Facebook post from the Southeastern Synod Evangelical Lutheran Church in America. The church did not mention a cause of death.

Graetz was the minister of the majority-Black Trinity Lutheran Evangelical Church in Montgomery. Graetz was the only local white clergyman to support the boycott. He and his wife, Jeannie, faced harassment, threats and bombings as a result.

FILE - In this December 2005 file photo, Rev. Robert Graetz, second from left, and wife, Jeannie, sing along with Gladys Williams, right, on the Cleveland Avenue bus, during the walk of remembrance to commemorate the 50th anniversary of the Montgomery Bus Boycott in Montgomery, Ala. Graetz, the only white minister to support the Montgomery bus boycott, died Sunday, Sept. 20, 2020. He was 92. (Karen S. DoerrThe Montgomery Advertiser via AP, File)

FILE - In this December 2005 file photo, Rev. Robert Graetz, second from left, and wife, Jeannie, sing along with Gladys Williams, right, on the Cleveland Avenue bus, during the walk of remembrance to commemorate the 50th anniversary of the Montgomery Bus Boycott in Montgomery, Ala. Graetz, the only white minister to support the Montgomery bus boycott, died Sunday, Sept. 20, 2020. He was 92. (Karen S. DoerrThe Montgomery Advertiser via AP, File)

Sparked by the December 1955 arrest of Rosa Parks, the planned one-day boycott of Montgomery City Lines became a 381-day protest of the segregated bus system that ended with a U.S. Supreme Court ruling that segregated public buses were unconstitutional.

The parsonage where the Graetzes lived was bombed in 1957, not long after the boycott ended, in a wave of attacks on civil rights leaders and churches. Four Black churches and the home of the Rev. Ralph Abernathy were also bombed that night.

A crude package of 11 sticks of dynamite wrapped around a small box of TNT was first thrown at the parsonage earlier that night but failed to explode. A second bomb was thrown and damaged the house. The Graetzes were at home with their children at the time.

FILE - In this Friday, Oct. 28, 2005, file photo, The Rev. Robert Graetz, a friend of Rosa Parks and civil rights advocate, speaks about Parks at a memorial service for Parks at Dexter Avenue King Memorial Baptist Church in Montgomery, Ala., sponsored by the Montgomery Improvement Association. Graetz, the only white minister to support the Montgomery bus boycott, died Sunday, Sept. 20, 2020. He was 92. (David BundyThe Montgomery Advertiser via AP, File)

FILE - In this Friday, Oct. 28, 2005, file photo, The Rev. Robert Graetz, a friend of Rosa Parks and civil rights advocate, speaks about Parks at a memorial service for Parks at Dexter Avenue King Memorial Baptist Church in Montgomery, Ala., sponsored by the Montgomery Improvement Association. Graetz, the only white minister to support the Montgomery bus boycott, died Sunday, Sept. 20, 2020. He was 92. (David BundyThe Montgomery Advertiser via AP, File)

Tafeni English, the director of the Montgomery-based Southern Poverty Law Center called Graetz a “remarkable civil rights and social justice leader.”

“Rev. Graetz was a kind and gentle soul, who along with his revered wife, Jeannie, dedicated his life to creating Dr. King’s vision of the Beloved Community,” English said.

FILE - In this Tuesday, Jan. 6, 2015, file photo, Gov. Robert Bentley, left, greets Robert Graetz, center, and his wife, Jean, before a screening of Selma at the AMC Festival 16 in Montgomery, Ala. Graetz openly supported the Montgomery Bus Boycott and was a Lutheran clergyman of a Black church in Montgomery starting in 1955. Graetz, the only white minister to support the Montgomery bus boycott, died Sunday, Sept. 20, 2020. He was 92. (Albert CesareThe Montgomery Advertiser via AP, File)

FILE - In this Tuesday, Jan. 6, 2015, file photo, Gov. Robert Bentley, left, greets Robert Graetz, center, and his wife, Jean, before a screening of Selma at the AMC Festival 16 in Montgomery, Ala. Graetz openly supported the Montgomery Bus Boycott and was a Lutheran clergyman of a Black church in Montgomery starting in 1955. Graetz, the only white minister to support the Montgomery bus boycott, died Sunday, Sept. 20, 2020. He was 92. (Albert CesareThe Montgomery Advertiser via AP, File)