As the nation celebrates Martin Luther King, Jr. Day, LIFE.com presents pictures — many of which never ran in LIFE magazine — from the landmark March on Washington in 1963, in tribute to the people who transformed a rally into an era-defining event.
As the nation celebrates Martin Luther King, Jr. Day, LIFE.com presents pictures — many of which never ran in LIFE magazine — from the landmark March on Washington in 1963, in tribute to the people who transformed a rally into an era-defining event.