It's not innane. It's the truth. Protestors CAN do OTHER things that get them arrested. Barring any facts presented as to why the person was arrested I refuse to assume it was because of their sign. Show me a police report that says the person was arrested solely because of their sign and I'll join you in saying it's a travesty of justice and the American dream, but without FACTS to support the proposition that the person should not have been arrested I'm not going to assume they were sweetly and innocently telling George Bush to f#$% off while not committing any other type of crime.
Again, freedom of speech does not include an audience. Assemble all you want, that doesn't mean the politician of your choice needs to be within shouting distance. Yes people CAN be sorted according to their approval or disapproval, check out any KKK or neo-nazi rally and the accompanying counter protest.
No creating a public nuisance is NOT allowed in a free society, sorry but impinging other people's freedom to go about their life is counter to a free society.
Not strawmen at all. Part of the issue at hand. The guys sign said FUGW, community decensy standards clearly apply.
If you think you have a right to stand in the place or your chosing at the time of your chosing and "greet" the politician of your chosing then you know absolutely NOTHING about the First Ammendment.
Suffice it to say you have a, ahem,,,, novel,,, interpretation of the first amendment and freedom in general. Carry on.