The key differnce of course is that when society encounters the rare individual who has renounced his humanity and reverted to animal status the correct response is to execute the monster as punishment for his crimes. Incarceration can not begin to cover their magnitude. Ironically, it is at this point (and only ever this point) that liberals suddenly discover the sanctity of life. Then they write op-ed pieces and gather outside of prisons lighting candles and singing songs. Apparently, it doesn't really matter what you have developed and socialized into.
I can agree with that.