THE LOST TAPES: MALCOLM X relives the pivotal years of this trailblazing activist using rarely seen footage and audio tapes, including never-before-seen footage of Nation of Islam rallies and recordings made at the Audubon Ballroom on the day of his assassination. THE LOST TAPES: MALCOLM X premieres Monday, Feb. 26 at 8 p.m. on Smithsonian Channel.