Speakers mark the 50th anniversary of MLK I Have a Dream Speech in Washington DC

Martin Luther King III waves as he is joined by his wife Arndrea and daughter Yolanda Renee as they arrive in front of the Lincoln Memorial, to mark the 50th anniversary of his father, Dr Martin Luther King's, " I Have a Dream " speech, August 24, 2013, in Washington, DC. Civil rights leaders and politicians joined thousands to remember the 1963 March on Washington. UPI/Mike Theiler