Television bombards children with sex and violence, entertainment-industry critics say, and they want the government to help shield kids from it. But a string of broadcast, cable and satellite executives - and the actor who played mobster Ralph Cifaretto on HBO's "Sopranos" - on Tuesday urged Sen. Ted Stevens not to go too far. "We're already starting to self-police ourselves," said the actor, Joe Pantoliano, representing an industry group called the Creative Coalition. It's been nearly two years since pop star Janet Jackson bared her breast and its jewelry on live television, fueling calls for Congress to crack down on...