And when mistakes are made? We say sorry, hand them some compensation and a new ID and then... oh, wait, they re dead.

As for vigilante killings, where to begin. You can have lynchings if you want, but if they get the wrong man then all the lynch mob must by our own admission be executed themselves. Besides which their very actions break the "no killing" law. You may well run out of mobs. I'd rather not have to walk around scared because I look a bit like that guy who was in court the other week, or because people don't know the difference between a paedophile and a paediatrician.