I'm as anti-censorship as they get, but there seems to be a constant push in society to regard broadcast content with an ever increasing amount of violence, sexual references and/or adult language as "non controversial".
There's got to be a middle ground someplace, where you respect the fact that on the whole, most U.S. families aren't comfortable letting our pre-teen kids view some of this stuff.
I'm a big fan of animated series like Futurama, The Simpsons, South Park and Family Guy, but these are especially insidious from the standpoint of younger kids being drawn to animated features. They're trained that the animated material is the content made for them, and it's approved for their viewing automatically. All of a sudden, you've got these adult-oriented cartoons on prime-time TV and as soon as they get sight of one, they're going to fight to watch it. (They've got the cute characters, colorful content, fun music, etc. etc.)
At the end of the day, I absolutely believe it's the PARENTS' job to control what kids view on TV at home. It's not a responsibility we should place on the shoulders of the networks or the content providers. But that doesn't mean we should act like all of this content is perfectly healthy for kids to watch. It also means, IMO, the networks would at least be doing parents a favor if they put this stuff in later evening time-slots (which they often do already).