Obviously they dont need it.
Theyve already shut down a number of sites without this legislature, and they very well have the right to so why the hell pass something through that could harm those that arent breaking any laws?
P.S. You say you agree with Anonymous though theyve supposidly assaulted things such as the play station network and more, and are said to be responsible for much of the truely pirated and illegal goings on the web so why support them?