Thousands of civil rights supporters gather outside a chapel in Selma, Ala., on March 21, 1965, the start of a five-day, 50-mile march on the Alabama state capitol at Montgomery. The march will be led by the Reverend Dr. Martin Luther King, who spoke at this church service preceding the march. Supporters of black voting rights will march from Selma to Montgomery to protest the killing of a demonstrator by a state trooper and to improve voter registration for blacks, who are discouraged to register. (AP Photo)