Milton William "Bill" Cooper (May 6, 1943 – November 6, 2001) was an American conspiracy theorist, radio broadcaster, and author best known for his 1991 book Behold a Pale Horse, in which he warned of multiple global conspiracies, some involving extraterrestrial aliens. Cooper also described HIV/AIDS as a man-made disease used to target blacks, Hispanics, and homosexuals, and that a cure was made before it was implemented. He has been described as a "militia theoretician".
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