One of the last pictures to be taken of Martin Luther King Jr., as he spoke to a mass rally in Memphis, Tennessee, on April 3, 1968, saying he would not halt his plans for a massive demonstration scheduled for April 8 in spite of a federal injunction. Bettmann / Getty
This is how the morning newspapers in London headlined the assassination of Martin Luther King Jr. on April 5, 1968. AP
Thousands of young people march through Times Square in New York on April 5, 1968, bound for City Hall after a rally in Central Park. The demonstrators, both black and white, were protesting the assassination of Martin Luther King Jr. The line stretched some 12 blocks at times as they marched down Broadway. John Lindsay / AP