Presidents Bill Clinton and Jimmy Carter will join President Barack Obama to commemorate the 50 th anniversary of the historic March on Washington and Dr. Martin Luther King, Jr. ’s “I Have a Dream” speech in in Washington, D.C. on August 28, 2013. Obama, Clinton and Carter will deliver remarks at the Let Freedom Ring Commemoration and Call to Action event at the Lincoln Memorial. Three of the five pictured presidents will attend the 50 th anniversary of the historic March on Washington, August 28th. Obama, Clinton, Carter and King family members, along with coalition members and dignitaries, will honor Dr. Martin Luther King, Jr.’s call to “Let freedom ring” by ringing bells at 3:00 p.m. EST, a half-century to the very minute after Dr. King delivered his historic address. Groups across the country will also pause to mark the 50th anniversary of Dr. King’s speech by ringing bells at 3:00 p.m. EST in their home states. “Martin Luther King’s unforgetta...