A sick friend once pointed out an equally sickening, but justifiable way to deal with such scum!
Take the man in question and insert a one-foot long piece of Scaffold tube up his anus, then proceed to fill the given tube with barbed wire. Remove the tube.
The scum, now in agony, has a choice;
Either die, over a number of weeks from an internal infection, or remove the barbed wire - tearing out his innards and killing him in an excruciatingly painful way!
Sick but effective!