Hopefully he has some friends or acquaintances that aren't afraid to ridicule him. Seriously? You brought a gun to a protest near the president? Oooooh, such a big man... I'll bet you have a huge penis.
This guy needs some good old fashioned mocking. Why doesn't he go all the way? Strap a big D&D bastard sword to his back. Paint his face half-blue. Wear a kilt and scream something like "They'll never take OUR FREEDOM!"
This is the 21st century fercryin' out loud.
We are a way for the cosmos to know itself.