In the 1970s, John Wayne Gacy led an apparently everyday life as a successful Chicago businessman and a respected member of his community. But it wasn’t long before he was dubbed The Killer Clown due to his participation in charity and fundraising events where he would dress as a clown to entertain children. Gacy was arrested in 1978 after the police found the bodies of 33 young men and teenagers buried in the walls and basement of his home. He was convicted and executed by lethal injection in 1994.