I’d also point out that the existence of these folk and others like them is cited as evidence of “growing opposition to the dictatorial” blah, blah, blah of the current administration.

Bad stuff. There were a coupla whacky leftist orgs who talked about storming this or that building and effecting citizens arrests of Bush admin figures, but, let’s be honest, most leftists these days don’t have arms or familiarity with their use sufficient to do much of anything. On the right, however, familiarity with weaponry is not at all uncommon.