...Yeah, but the point is that there are so many ways this could go wrong and backfire that it inherently makes the whole thing a bad idea. The first part of where it's bad is where the cops come in - when they decide to intervene (and if there are 1000 or over then they might justify calling in the National Guard) - there is a substantial possibility that it could turn into a bloodbath. Regardless of whether or not that actually happens, the Media would most likely spin it in every way they can. If nothing serious happens, they could easily paint it as a bunch of "kooky old farts with guns" who aren't for "progressive" ideals. If something serious DOES happen, then they will be easily able to make it look like the gun-marchers brought it upon themselves, were threatening "national security," starting a violent insurrection, trying to eliminate good old American freedoms, trying to harm police officers...etc. Long story short, whatever there is to gain from this is microscopic, but what there is to lose is so massive that it's borderline absurdist.