If he is on own side why can he be seen in the video shouting “health care now”?
2nd video
http://hotairpundit.blogspot.com/2009/08/man-seen-walking-around-with-ar-15-and.html
Thats only what it appears. We can’t actually hear what he said. He, however, was there with a dozen members of the Arizona Shooters board to protest Zer0. He has been identified as Chris B by members of that board. If you see the gent with the bullhorn on the sidewalk near him, you will see that he has the Obama Joker face on the back of his head. So the protestors were intermingled.