I had to hurt people in my life in self-defense, and while I still regret doing it, it is not so much the act itself that is haunting me, but the fact that I had to do it, if that makes any sense. I am a very peaceful guy, and even if I am really, REALLY mad at someone - and that is quite a raretiy to occur - I usually just feel like breaking something inanimate to vent my anger. I am very certain that I would never EVER lay a hand on someone in anger and rage. In cold blood, I can't really say, and I guess nobody could. Many people were so angry at someone that they thought about killing them for a second - and I am no exception to that - but it is nothing that dominates my mind, far from it. I have a rather professional interest in crimonology, criminal psychology and statistics, and according to an article I read, people on the autism spectrum are usually very lawful. Violent crime, like it was already stated, involves interpersonal interaction, and most aspies stay clear of situations where those could arise. That said, if I had to make an assumption, I think I would be able to fatally harm another human, while I had many a problem to do the same with most animals.