Is it a good idea to censor kids from certain things?

[Custommadeboy]

Certain things should be censored to kids but not everything.
When kids know at an early age they'll be more mature about it in the future and know more about the subject then most kids their age.

Exceptions to this is as devonin put out there, when kids get tought about sex ed they'll only understand until they relize its reality and not just giggles and laughter.