If I worked PR for SOPA/PIPA, I'd try to associate the anti-SOPA/PIPA movement with Anonymous. Let's see: Megaupload is a foreign website being taken down. SOPA is about taking foreign websites down. Anonymous responds with vandalism as a result of Megaupload being taken down. Therefore, anyone opposing SOPA are criminal vandals. Yep, that logic should be strong enough for the American public.
But it also gives you the excuse to say "see? we don't need SOPA, overseas websites are already being closed down".
It doesn't matter what "the American public" thinks, as long as senators' phones keep ringing an people keep organizing. The copyright mafia will never be able to take the streets, TeaParty-style, so whether they brainwash a moron here and there doesn't really matter.
EDIT: btw, I do find the timing of this operation quite "funny". Conspiracy theorists will go wild.
If I worked PR for SOPA/PIPA, I'd try to associate the anti-SOPA/PIPA movement with Anonymous. Let's see: Megaupload is a foreign website being taken down. SOPA is about taking foreign websites down. Anonymous responds with vandalism as a result of Megaupload being taken down. Therefore, anyone opposing SOPA are criminal vandals. Yep, that logic should be strong enough for the American public.