(FILES) US civil rights leader Martin Lu…(FILES) US civil rights leader Martin Luther KIng waves to supporters 28 August 1963 from the Lincoln Memorial on the Mall in Washington DC during the “March on Washington”. On the steps of the Lincoln Memorial, King delivered his “I Have a Dream” speech, which is credited with mobilizing supporters of desegregation and prompted the 1964 Civil Rights Act. 28 August, 2003 marks the 40th anniversay of the speech. King was assassinated on 04 April 1968 in Memphis, Tennessee by James Earl Ray, who confessed to the shooting and was sentenced to 99 years in prison. AFP PHOTO/FILES
(Photo credit should read -/AFP/Getty Images)