Uh huh. If by "peaceful" you mean screaming and disrupting the event that thousands of others came to hear.
They claimed they were assaulted, pushed and shoved, with Brousseau punched in the stomach, and unceremoniously removed
What they did was, at the very least, rude. Rudeness often elicits negative responses. If you don't want to get your heads stove in, maybe you should keep your top holes shut.
Go into a biker, Western Music or strip club and cause trouble and see what happens to you. If you’re lucky, the bouncers will save you by 86ing your butt.