...Just out of curiosity:
It was a political candidate for national office, it was a question and answer session with citizens in the audience, on the grounds of a State chartered institution; But it raises this question: Does the fact that it might be held on private property circumscribe free speech rights (other than the decorum issue)?
These are all good points, Nick. A state chartered institution holding an event for a polictical candidate certainly muddies my argument, doesn't it? Also, given that an event such as this is usually accompanied by the media, I think I have to agree that this might be classified as a public event and the things being discussed here would be classified as political expression. Ok, now I am not so certain about my position.
As far as the security guards (the article describes them as police) , they were acting, as is said in legalese, under color of law. But, are you saying that would change the issue, if they were security guards, not police?
No, I think there is a clear distinction under the law. The security guards were either government employees or they were not government employees. It makes all the difference when it comes to their ability to suppress speech. If they are not government employees, they are no different than the bouncer at your local tavern when it comes to being Constitutionally prohibited from suppressing speech.
The question is, does a private citizen have the right to suppress the free speech of another in a public venue? Suppose I was holding a public rally in the town square and the sound system was mine. Then suppose someone got up to speak and I didn't like his politics. Does the Constitution forbid me from turning off the sound system? I don't think so. Does the constitution forbid the government from turning off the sound system? Yes it does.
Again, just curious about your reasoning.