Article Photos: Marching for King's dream: 'The task is not done' 13/19

Martin Luther King III waves to the crowd after speaking during an event to commemorate the 50th anniversary of the 1963 March on Washington at the Lincoln Memorial, Saturday, Aug. 24, 2013, in Washington. Tens of thousands of people marched to the Martin Luther King Jr. Memorial and down the National Mall on Saturday, to commemorate King's famous ""I Have a Dream" speech, made Aug. 28, 1963, during the March on Washington, and pledging that his dream includes equality for gays, Latinos, the poor and the disabled.(AP Photo/Carolyn Kaster)