RIAA Against Filtering?

Well, no. But at least the RIAA is against mandatory filtering by ISPs:

The RIAA does not support this approach in the US, opting instead to back the tradeoffs of the DMCA. That law allows ISPs a "safe harbor" for the content passing through their networks so long as they respond to takedown notices and legal requests in a timely fashion.

— RIAA chief: We don't see a need for mandatory ISP filtering, By Nate Anderson, ars technica, Published: January 30, 2008 - 11:00PM CT

This puts RIAA on the same side as Verizon, leaving AT&T out there alone. Well, except for much of the U.S. government.

-jsq