Blocking, censoring, and banning should be the last resort in dealing with children, not the first. I agree that arbitrary controls on what children experience online shouldn't be the first line of defense, but I reject the notion that parental control is a form of censorship. Only governments censor.
Parents have both a right and a responsibility to determine what is suitable for their children.
But there is a big difference between installing a chip that empowers parents to exercise control and establishing a government policy that determines what you and I can read or view. I am strongly opposed to censorship. But I support parents who provide guidance for their kids whether in cyberspace, in school, or even in the choice of what they eat for breakfast. I don't want anyone telling me what to do with my body, but I won't let my kids guzzle sugary cereal every day. The government can't possibly know what is right for my kids to see.