Learning from our racial past is crucial to addressing America's current ethnic tensions, but only if we confront key historical contradictions. In an encore broadcast of Moyers & Company (check local listings), Khalil Muhammad helps bring these issues to light. Muhammad heads the New York Public Library's Schomburg Center for Research in Black Culture, and is the author of The Condemnation of Blackness, which connects American histories of race, crime and the making of urban America to modern headlines.