Allen Lee Davis for example killed Nancy Weiler (she was 3 months pregnant) in her house by bashing in her skull with the butt of a revolver to the point that her face was unrecognisable, he then proceeded to tie up Nancy's 10 yr old daughter, Kristina  and then shot her twice in the face. After that he shot Nancy's youngest daughter Kathy in the back while she was trying to run away. If that doesn't warrant the death penalty then i don't know what does.