>It's meant to do just that

They aren't trying to stop mass shootings, they're trying to keep guns out of everyone's hands, not just potential mass shooters.

>This is just fear disguised as innocent concern

I wouldn't say fear, more like history repeating itself. MLK was denied a permit to carry a firearm because he wasn't of "good moral character". Of course it was because of who he was and what he was saying, but they disguised it by claiming morality. It was a bad idea then, its a bad idea now. The only difference in the two is who they want to deny, but its still the government deciding who can exercise a right.