I mean... on an individual level it's obviously true: if there's a determined active shooter, there's probably not much more you can do than try to shoot them f

I mean... on an individual level it's obviously true: if there's a determined active shooter, there's probably not much more you can do than try to shoot them first. On society level it's indeed a bit more complicated matter. Every additional gun in the society is potentially one more gun in the hands of a bad person.