KWJ,
True to a point, but when security takes drastic steps, i.e. using pepper spray. Mob rules come in to play. A few people out of control, burning and blowing up things, turns in to 5, then 10, the 20, etc. Of course we don't have all the information on what really happened. How come the trouble makers where not removed from the park? Using pepper spray should be a last line of defense. Not the first action to be used, if this is what happened.
When are promoters going to get a grip on security at races? Can't they see this as a growing problem? Hell, a few years ago living in IL we attended the Peoria TT. I was uneasy attending this race, wasn't sure how the crowd would be. It was a better crowd then I saw at Redbud, or many SX that I have attended.