Lol I dare them to try this shit on an American. They won't of course b/c we're a major part of their military budget but there's no faster way to piss off an American than by telling him he can't say what's on his mind. Sadly some jurisdictions have passed similar laws. I won't respect or acknowledge them. It's my god given right to be an asshole. Considering I threaten no one w/ bodily harm or try to incite it I'm betting the supreme court has my back.
Oh they're trying... there's been a bit in the news about it. eg.
How about "Fuck you, Israel"?