Minister and social activist Martin Luther King, Jr., was the preeminent leader of the American civil rights movement from the mid-1950s until his assassination in 1968. His guidance was fundamental to the movement’s success in ending the legal segregation of Black Americans in the South and other parts of the United States. He rose to national prominence as a leader of the Montgomery bus boycott in 1955–56 and later as the head of the Southern Christian Leadership Conference, which pursued civil rights through nonviolent tactics, such as the Selma March (1965) and the massive March on Washington (1963), at the culmination of which, King, an immensely gifted orator, delivered his iconic “I Have a Dream” speech. He was awarded the Nobel Peace Prize in 1964 and is commemorated by the Martin Luther King, Jr. National Memorial in Washington, D.C. Learn more about Dr. King’s extraordinary accomplishments through our timeline of his life.