No , there should be no State Censoring of anything (except in war time itself- only then is there a genuine security reason)..By war I mean a real one - not these "Game" wars our governments are in at the moment.
Be it the Internet/ Media/Cinema or life generally.
We all have the option of on-off switches , No one forces anyone to go to the pictures to watch an excessive violent or sexual movie ..or read a particular News Rag or Book.
Censorship should lie in the hands of the individual themselves to suit themselves.
Nor should we hide from older children the "truths" of life -- the 9pm watershed is a joke ..may'be even a cause of troubles in itself ..
The only watershed here - should be in and by parental control .
As for the internet -- the computer/net geeks will always be one step ahead of the governments-- and will always deliver a way round most censorship.