'Revenge'

Bruce knocked on the door of a house containing his ex-wife and her immediate family. Inside, an eight-year-old girl heard the knocks then excitedly rushed to the door to investigate. Bruce reached into his Santa suit, pulled out a handgun, and sent a bullet tearing through at the little girl's head. He then stepped over her body, burst into the living room, and opened fire on the 24 remaining party guests.