I don’t understand why they don’t use a tranquilizer gun. There’s no need to murder people with a remote-control robot when you could just knock them out instea

I don’t understand why they don’t use a tranquilizer gun. There’s no need to murder people with a remote-control robot when you could just knock them out instead. Or use the sticky silly-string stuff that immobilizes them. Or a concussion grenade. Or taser. So many (usually) non-lethal options but, no, they choose kill. I guess the big advantage is that there’ll be no need for subsequent prosecution. Handy, that.