Frank Dandridge / Time & Life Pictures / Getty Image Martin Luther King Jr. leading the second Selma to Montgomery civil rights march in Selma, Alabama, on March 9, 1965. Robert W. Kelley / Getty Images Leaders of the March on Washington for Jobs & Freedom link arms on Aug. 28, 1963. Among those pictured (front row from left): John Lewis, Matthew Ahman, Floyd B. McKissick, Dr. Martin Luther King Jr., Reverend Eugene Carson Blake, Cleveland Robinson, and Rabbi Joachim Prinz. The march provided the setting for King's iconic "I Have a Dream" speech. Ernst Haas / Getty Images King surrounded by reporters during a public address in Birmingham, Alabama, in 1962. Bettmann / Bettmann Archive King during a press conference on Dec. 4, 1964, holding up photos of three young civil rights workers murdered in Mississippi. Bettmann / Bettmann Archive King shaking hands with the crowd during the Freedom March on Washington, 1963. Ted Williams / Getty Images King waving to the crowds as he drives in a motorcade on the way to make a speech at the Illinois Rally for Civil Rights on June 21, 1964, in Chicago. Howard Sochurek / Getty Images Sitting for a portrait at Atlanta University, circa 1963. Frank Dandridge / Getty Images King watches president Lyndon B. Johnson speak about the Selma to Montgomery March while in Selma, Alabama, in 1965. Frank Dandridge / Getty Images King leads a prayer in a church before the second Selma to Montgomery civil rights march. Bob Gomel / Getty Images Overview of crowd in front of the Lincoln Memorial during King's famous "I Have a Dream" speech on Aug. 28, 1963. Paul Schutzer / Getty Images A view of civil rights demonstrators as they lock arms during the March on Washington for Jobs and Freedom on Aug. 28, 1963. Francis Miller / Getty Images King while giving his "I Have a Dream" speech to a huge crowd gathered during the March on Washington for Jobs and Freedom in 1963. Frank Dandridge / Time & Life Pictures / Getty Image American former politician Emily Taft Douglas speaks with King during one of the Selma to Montgomery civil rights marches, 1965. Chicago History Museum / Getty Images King during a demonstration against police treatment of voter rights demonstrators in Montgomery, Alabama, on March 17, 1965. Art Shay / Getty Images View of the balcony where King was murdered on April 4, 1968. Historical / Getty Images President Lyndon B. Johnson and advisers learn of the assassination of King. Lee Balterman / Getty Images Streets ablaze from rioting following assassination. Lee Balterman / Getty Images Smoke clouds billowing from fires set during the riots. Bettmann / Bettmann Archive Thousands of funeral marchers gathered outside Ebenezer Baptist Church prepare to walk five miles to Morehouse College where another service for King is held on April 9, 1968. Santi Visalli Inc. / Getty Images Coretta Scott King wearing a black veil at the funeral of her husband in Atlanta. Bettmann / Bettmann Archive The family of Martin Luther King Jr. view his body as it lies in state at Sister's Chapel at Spelman College. Art Shay / Getty Images Protesters marching following King's death, 1968. Bettmann / Bettmann Archive A mule-drawn wagon carrying King's casket is followed by dignitaries and thousands of people as it moves en route to Morehouse College for a memorial service. See more incredible pictures from history at Getty Images.