John Wayne Gacy (1942-1994) was an American serial killer and rapist who was convicted of the sexual assault and murder of 33 teenage boys and young men between 1972 and 1978 in Cook County, Illinois. He was known as the "Killer Clown" due to his practice of
From Wikipedia
John Wayne Gacy was an American serial killer and sex offender who raped, tortured and murdered at least thirty-three young men and boys between 1972 and 1978 in Norwood Park Township, a suburb of Chicago, Illinois. He became known as the "Killer Clown" due to his public performances as a clown prior to the discovery of his crimes.