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Manning Marable, Director of the Institute of African American Studies at Columbia University, poses for a photograph in his office August 16, 2001 in New York City.
A new biography of Malcolm X by Columbia historian Manning Marable went on sale Monday. Marable spent decades working on it and dug up shocking new details about the man and his death. He would have explained this information on a book tour this week, but he died unexpectedly last Friday of complications related to lung disease. Author Michael Eric Dyson, who has also penned a biography of Malcolm X, joins us to discuss the book.