I had believed in the good guy with a gun idea until a citizen trying to stop a shooter by shooting back got himself shot by the police. Then I imagined myself in the position of the police in that scenario. It's not neat and tidy. It gets worse as I imagine more people getting involved with their own firearms.

In a small space where everyone can see everyone, the aggressor is clear. I think of the guy who tried to rob a gun store. Everyone there hears what he said and sees how he's acting. As soon as someone walks in without seeing the situation unfold, it becomes messy really fast.