MLK: The 50th Anniversary of the March on Washington
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Crowds gather on the National Mall to commemorate the 50th Anniversary of the March on Washington, August 28, 2013.
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Martin Luther King III speaks during a ceremony marking the 50th anniversary of his father Martin Luther King, Jr.'s "I Have a Dream" speech on the steps of the Lincoln Memorial in Washington, August 28, 2013.
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President Barack Obama, first lady Michelle Obama, former president Bill Clinton and former president Jimmy Carter arrive at the Let Freedom Ring ceremony at the Lincoln Memorial, Aug. 28, 2013, to commemorate the 50th anniversary of the 1963 March on Washington.
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Former presidents Jimmy Carter and Bill Clinton arrive at the Let Freedom Ring ceremony at the Lincoln Memorial in Washington, Aug. 28, 2013.