Was the director of the United States Federal Bureau of Investigation from May 19, 1924 until his death on May 2, 1972. Kept files on many political leaders and public figures that contained sensitive and potentially damaging information which he used for blackmail purposes. Ironically, there is strong evidence now that organized crime knew, and had evidence to prove, that Hoover was a secretly active homosexual transvestite and threatened him with exposure unless he took the heat off of their organization and onto some other person or organization. It was then that Hoover decided to focus his efforts at destroying the careers of liberal political and public figures such as Charles Chaplin and political reformers and civil rights leaders such as Martin Luther King. If true, that may explain why Hoover for decades kept denying that there was any form of national organized crime syndicate in America, and he was forced to admit it only because of the testimony of Mafia killer Joe Valachi before Congress in the early 1960s--which Hoover, as it turned out, had unsuccessfully tried to prevent.