It seems to me that there are two conflicting First Amendment rights: those of the Westboro church to peaceably assemble, and those of the soldier's families to practice their religion through the solemn sacrament of burial. In that spirit, I am not particularly alarmed that state legislatures have determined that disrupting a funeral is not "peaceable".

Perhaps I should clarify that I believe that "freedom of speech" means that you have the right to publicly assert your view on a matter, not that you have the right to disrupt people around you such that they are forced to pay attention to what you are saying. But I'm also not confident that the civil court system is the right place to clarify these issues.