The three-story 16th Street Baptist Church was a rallying point for civil rights activities through the spring of 1963. When the Southern Christian Leadership Conference (SCLC) and the Congress on Racial Equality became involved in a campaign to register African Americans to vote in Birmingham, tensions in the city increased. The church was used as a meeting-place for civil rights leaders such as Martin Luther King Jr., Ralph David Abernathy, and Fred Shuttlesworth, for organizing and educating marchers. It was the location where students were organized and trained by James Bevel to participate in the 1963 Birmingham campaign's Children's Crusade after other marches had taken place.