Via Boing Boing:

It amounts to a kind of cultural censorship. Call me paranoid, but given all the manipulative tricks the Republicans have gotten up to recently, I am prepared to believe that this has less to do with Homeland security and more to do with keeping the American public ignorant and free of foreign influence and inspiration. An ill-informed, isolated, ignorant populace is a populace easily manipulated. Fed a diet of reality shows coupled with faith-based reasoning (an oxymoron if ever there was one) and you have a perfect recipe for a country in which the government that can do more or less whatever it wants. [Emph. added] Democracy becomes a farce without access to information. David Byrne