Separating issues
Isn't the in your face actions question separate from guns per se? What if it was people discussing scripture with each other in a restaurant full of atheists who are offended by it? Or what if you're wearing an NRA sleeve patch? Or a burka to a nudist camp? Doesn't matter the offense / threat. All the same matters apply. The proprietor's rights, the 'terrorized' customers, all of it. Should Bible students read louder?
"Open carrying" one's rights isn't in your face per se; but evangelizing liberty among the tyrannized isn't always done wisely.