You're outside an adult bookstore in Hollywood, with a semiautomatic pistol in your waistband, when you buy $40 worth of cocaine from two guys who walk up to you. Once they leave, you realize that it's just powdered sugar.
So you're upset. A short time later, a block away from the scene, a homeless guy comes up to you and asks you for some change.
So you pump seven gunshots into the guy, killing him.
Not a good day. For anyone.