Fight! Er, I mean ...
Recently I've seen a post going around arguing in a rather condescending and quite definitive tone that concealed carriers would not be able to stop mass shootings such as those at Aurora. As evidence, the author claims that studies have shown that gun violence consistently increases with gun ownership in a state-by-state, city-by-city analysis. Note, the author offers no citation of said statistic.
I'm setting the hypothetical aside. It's hard to say whether concealed-carriers would have been able to stop anything in a situation where there were none. However, the statistics ... well I am convinced there have been studies that show otherwise. Would anyone be able to point me in that direction?
Answer by flownover
check out the incident map
Answer by txgho1911
More Guns Less Crime by John LottHe researched exhaustively crime rates and trends for those states that passed shall issue right to carry law. The best statistic you can enjoin would be to have your own gun if a gunfight finds you.