It’s not a smart thing to do.
Let’s say you, or another Freeper or anyone else, is exercising your right to open carry an AR-15, a Weatherby 30.06 or whatever, and some panicky numbnuts sees you, and says, “Holy S**t! It’s a mass-shooter” and blows you away from behind from his bedroom window?
Sure, you’re peacefully carrying a weapon. But the shooter in this hypothetical doesn’t that. For all he (or she) knows, you’re on your way to blow away a bunch of people at a school, a community center or the local shopping mall.
And in the shooter’s mind, he (or she) has just prevented a massacre.
The choices of criminals cannot trump the rights of the law-abiding.
What makes the responder a panicky numbnuts? By the time the mass shooter lifts his weapon and starts firing, it’s really too late. Isn’t that the whole point of arming the good guys? I can’t tell anything about your intentions just from looking at you.