Morgan: John Wayne Gacy killed at least 30 people.
Thirty-three, actually. John Wayne Gacy lived in Chicago. Gacy was known as a family man and a successful businessman who was active in community organizations, but he was also a pedophile who killed young men and buried them under his house. He was executed in 1994. People used to call him the Killer Clown because before his arrest he used to dress up as a clown and entertain children. Also while he was on death row he liked to paint clowns.