This type of display is absolutely ridiculous and shows once again how Bush's policies have reversed american freedoms.
Last time I checked there wasn't any clauses to the freedom of speech stating it was invalid under certain circumstances. Things like this have to be followed by an immediate public outcry. One of the first steps in establishing a dictatorship or fascist regime is the removal of free speech.
But I'm from Canada so all I can do is hope that you American's make the best choice come elections :