I admire guts.
This is a brilliant move that has the sole pupose of humiliating the rent-a-mob counter-protestors.
Expect the worst - you are making an assault on their headquarters. Watch your back (and each other's back), even when the whole thing is over. Bring video cameras. Let them commit the violence in public, but be ready for after-event violence (but do not bring a weapon). Expect them to bring out their 'A-team' of lawyers/thugs/spokesmen/investigators.
Has the media been contacted?
I already put it out on my email...myself and some friends are showing up on our bikes...hoping someone else has a camera