When I was a freshman in college, years ago, some group appeared on campus calling itself "Committee Against Racism". This group, CAR, posted flyers all over campus advertising a rally, to be held at an off campus location, to protest racism. Lots of little rich lids showed up for the fun on protest day. When the story came out in the paper, the "spokesman" for CAR turned out to me a member of the Communist Worker's Party. He bragged about all the support that was being shown to the CWP agenda that day. Watch out for groups you know nothing about.
We don't know squat about FAP and his friends except the he's not even nominally literate, that he's been out to Occupy Boston to "show solidarity with the 99%", that he's into chemtrails and other conspiracies, and his buddies are into camo outfits, masks, bandannas, CCW badges and Christ only know what else.
This "protest" seems like a wide open and freewheeling event, without guidance, direction, leadership, logistics or even clear purpose. You want to go stand next to some creep with a bandanna over his face and a sign protesting HAARP, or some schmoe with a Guy Fawkes mask on, handing out 911 truther flyers, then go for it. You want to be on camera when a bunch of Larouchers seize the podium, do it. Any one can show up, and based on what FAP and his Facebook Militia have to show, everybody will.
This isn't about unity within the RKBA community. It's about not stepping into shit.