Not a lot of people, because if you went and murdered someone, their family (if they have any) would presumably just murder you in turn.

That would make it a lot of people, then. Because now your family murders their family and their family murders your family.

	▲	longor1996 2 days ago \| parent [-]
		Yep, and the understandable fear/worry/expectation/knowledge of that possibility happening, is part of the reason that (usually) stops that cycle from starting in the first place.