Let Freedom Ring event held to commemorate the 50th anniversary of the 1963 March on Washington

US President Barack Obama delivers remarks during the 'Let Freedom Ring' commemoration event, at the Lincoln Memorial in Washington, DC on August 28, 2013. The event was held to commemorate the 50th anniversary of the August 28, 1963 March on Washington led by the late Dr. Martin Luther King Jr., where he famously gave his 'I Have a Dream' speech. UPI/Michael Reynolds