Why on earth would an unarmed citizen try to "stop" two vicious, armed robbers during the commission of the robbery?
That's what I don't understand. It's tragic but he made a very unwise decision and paid w his life. The less sensitive here might call it Darwinism. It also seems to have started the whole deadly confrontation.
Even cops would have let them get outside, if they were smart. You never want lead flying in a crowded public place. Let them get outside, then blast them.