Hanging is too good for him. and too quick
Flaying them while still alive, and pouring salt on the raw flesh, cooking them slowly with electrical current, and fanning them with a blowtorch ... simultaneously ... is too good for them, and too quick.
I stand by my comment. Let us simply rid ourselves of them, consigning them to Divine Judgment. God, who is all Justice and all Mercy, will deal properly with all of us.