I don't care WHAT happened in his life, there is a line that you do not cross if you have an even rudimentary concept of right and wrong. When a person decides, "I'm going to get a gun, walk into that store and rob them," there is no way that anyone with a brain can defend his or her actions.
BTW, rest assured that before God gets to judge him, a jury or judge will. It's only too bad that the clerk didn't take actions to avoid that waste of time.
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