PIPA, the Protect Intellectual Property Act, was passed unanimously by the Senate Judiciary Committee just last year. In the House, SOPA, the Stop Online Piracy Act, had been moving along. But Hollywood's effort to protect its products has run into another competing special interest group: Silicon Valley, which flexed its muscles yesterday when Wikipedia, Reddit and 10,000 other websites were blacked out. Washington got the message. Where did Hollywood go wrong? What can it do now to protect its products?