Please tell me why exactly stopping my local government from exacting more unconstitutional laws upon me by disrupting its "business" through my use of the First Amendment is a bad thing.
As I said, criminal charges seem severe, but the alternative could be far worse. The previous mention of Parliament was an excellent, if misplaced, example. The Britons elect people to shout down each other during the course of conducting "business" (government). However, I doubt you could find one MP who would appreciate or condone a British citizen jumping into the game. It's not about "free speech" any more than talking too loudly in a movie theater is. And if you want to call me on the private/public difference, then what's to stop someone from making political objections to what they see on the screen at the local Bijou?
And let's add one more thought. Most places have laws against disturbing the peace. How is screaming "bullshit" in the state legislature not that?