John Wayne Gacy is one of the most notorious serial killers in history and noted for his creepy costumes that he used for clowning. All the while, he maintained a fairly normal persona and was active in the community. After he was put in prison, he took up painting as a hobby and means of making money. Today, his art is collected by people interested or haunted by his life. Some people are not happy that his art is available and are even willing to buy it to destroy it.