Throughout history censorship has followed the free expressions of men and women like a shadow. In ancient societies, for example China, censorship was considered a legitimate instrument for regulating the moral and political life of the population.
Censorship is ancient and global. The origin of the term censor can be traced to the office of censor established in Rome in 443 BC. In Rome as in ancient Greece, the ideal of good governance included shaping the character of the people. Hence censorship was regarded as an honourable task. In China the first censorship law was introduced in 300 AD.
Today censorship is regarded as the suppression of free expression, speech, the exchange of ideas and other expressions. Censorship can be direct, indirect and self-imposed.