Yahoo News presents a groundbreaking documentary "Uniquely Nasty: The U.S. Government's War on Gays." The film is a historical investigation into a dark, and little known, chapter of America's recent past, including new details about J. Edgar Hoover's "sex deviates" program and a blackmail threat that led to the suicide of a U.S. senator - an event that haunted a generation of gays in politics.