50th Anniversary of the March on Washington

US President Barack Obama (C) greets Martin Luther King III (R), Arndrea Waters King (2-R) and their daughter Yolanda Renee King (bottom) at the conclusion of the 'Let Freedom Ring' commemoration event, at the Lincoln Memorial in Washington DC, USA, 28 August 2013. Thousands gathered at the Memorial to celebrate the anniversary of Martin Luther King Jr.'s "I Have a Dream" speech. UPI/Michael Reynolds/Pool