Choose your censorship.
Which form of censorship would you be most comfortable with?
Right-wing censorship: If you manage to get your hands on information concerning current military activities but are not a member of the armed forces, and subsequently have never signed any secrecy agreement, what you do with this data as far as making it public has to be cleared by higher powers. What you say about the way the country is run is another matter.
Left-wing censorship: If you have evidence that the ideology of the government, particularly in relation to minority groups and their general behaviour compared with the rest of the country, is not supported by facts, higher powers can censor this on grounds that it could amount to incitement. What you say about rival political ideologies and, to a lesser extent, the left is another matter.
Libertarian censorship: If you see someone in a public place, you may not use that information for any form of prosecution as it's an invasion of privacy. What you say about people, regardless of whether you have evidence to support it, is another matter.
Theocratic censorship: If you understand basic biology you should keep quiet about it because this guy who came to this church I go to says that evolution is the cause of all mass-murder and that anyway the world is only about six thousand years old and I don't quite remember the argument but it sounded convincing at the time and anyway we never had anything wrong in the world before people started criticising the authority of the Bible so we need to keep this poison out of our schools. Whether you have evidence to support the existence of the deity invoked by the government is another matter.
Bonus points for answering the question without needing to cut and paste previous posts in your reply.