Quote Originally Posted by sanguinekane
The cops and "the government" don't have a say in what kind of commercial you can make and put on the air. The FCC could fine you if it is found to be "innappropriate" for the time slot, network, audience, etc., and any network you brought it to would most likely just reject it, but you should have no problem just making one.
Yeah, http://changetheclimate.org has some excellent billboards around, they even sued the MBTA (I think) for not letting them put up a billboard somewhere

(edit, found link, http://changetheclimate.org/news/2004/12/2/mbta.php)

Seems like it hasn't been updated since 2004 though, too bad.