Marking the 50th anniversary of the March on Washington for Jobs & Freedom

Aug. 28 is the 50th anniversary of the March on Washington for Jobs and Freedom, where Rev. Dr. Martin Luther King delivered his historic "I Have a Dream" speech. But many other important figures spoke that day as well. Dr. Catherine Squires, professor of commmunications studies at the University of Minnesota, joined Buck recently to talk about the march, including people and messages from the event that are often overlooked.