Photo Gallery: "I Have a Dream" 50th anniversary 10/10

State Sen. Constance Johnson speaks during a ceremony to commemorate the 50th anniversary of the the March on Washington and the "I Have a Dream" speech by Dr. Martin Luther King, Jr., at the Oklahoma History Center in Oklahoma City, Wednesday, Aug. 28, 2013. The ceremony ended with the ringing of a replica of the Liberty Bell. Photo by Nate Billings, The Oklahoman