送交者: qm 于 2013-12-09, 17:17:35:
回答: There are studies on justifiable homicide 由 yuffie 于 2013-12-09, 15:52:43:
You don't have kill some one to defend yourself or prevent a crime. Just the though that you MIGHT have a gun would scare a lot of criminals not to go near you, and not entering any statistics.