Freedom of speech and expression is of paramount importance in a democratic society is that (1) if there is no such freedom. Makes the text some ideas that have been blocked. Society will have a chance to know them. Such statements may be true or not true. But the people will lose the opportunity to know and verify the message. Often this happens because the authority does not want to let the public know that the message is blocked. If you already know to make their shaky power. That is, a dictator these shackles own power rather than public concern. And the likelihood that the public will know the truth and judge. Moreover If it appears that the text is blocked, it is not true of all.