Citizens United thanks Hollywood A-list on billboards

Citizens United has booked billboard space near the near the Kodak Theatre (where the Acadamy Awards are held) for the month of February. The billboards that look like they have been art directed by a chimp with glaucoma thank Hollywood A-listers for their help getting President Bush reelected. Michael Moore, Whoopi Goldberg, Ben Affleck, Martin Sheen, Chevy Chase, Barbara Streisand, and Sean Penn are the targets for this highly illogical campaign. (read more)

Perhaps it is because I'm not American that I don't quite understand the "rule" where celebs from the country singing Dixie Chicks to the documentary making Michael Moore should "shut up" about their opinions in a country that is otherwise so proud of their freedom of speech, but other celebs like Ann Coulter who thinks Canada sent fighting troops to Vietnam and argues it with a Canadian reporter, may share theirs that I don't understand this campaign at all. It depends on what kind of celeb you are? If you're an actor, singer or documentary filmmaker you shall keep your opinion to yourself? The "funny" is , I guess, that the Hollywood A-list opinions sent voters the other way? Nobody wants to be like Michael Moore? I don't know what this poster is trying to say, your guess is a good as mine.