U.S. nonsectarian agency founded by Martin Luther King, Jr.
, and others in 1957 to assist local organizations working for equal rights for African Americans. Operating primarily in the South, it conducted leadership-training programs, citizen-education projects, and voter-registration drives. It played a major role in the historic March on Washington in 1963 and in the campaigns to urge passage of the Civil Rights Act of 1964 and the Voting Rights Act of 1965. After King's assassination in 1968, Ralph Abernathy became president. In the early 1970s the SCLC was weakened by several schisms, including the departure of Jesse Jackson , who founded Operation PUSH in Chicago.