Every time someone goes on a shooting rampage, we ask why this particular person was not detected and stopped. But we should have stopped him (and many others) from getting a gun in the first place.
也许在对安全的追求中，我们树错了靶子——人民。也许更好的办法是控制武器。每当有人走上枪击犯罪之路，我们都会问为什么没有查出这个具体的个人的异样并阻止他。但我们本应该在一开始阻止他（和许多其他人）弄到枪。但是，在美国买到枪比登上飞机还简单。