Thanks for all the great responses, guys, even though I don't agree with some of them.
I should not that I also posed this question at a more conservative board that I visit, and, surprisingly, the responses I got were pretty similar.
I'm not trying to say that freedom of speech should be limited (except for unprotected speech, like I already said). Perhaps I came across as saying differently. My beef is that the people of this city didn't want their tax dollars going towards displaying that message, so they petitioned to have it removed. But now the ACLU is forcing the people to continue paying for it. I could really care less about what the message was, now. Idiots have every right in the world to spout of nonense and tripe.
And yes, taking the Sledge Hammer of Free Speech to it would be pretty immature and unlawful. Instead, I should erect a monument right next to it to Capt Lance Sijan, a pilot in Vietnam who died in a POW camp.
