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"Unpopular ideas can be silenced, and inconvenient facts kept dark, without the need for any official ban … At any given moment there is an orthodoxy, a body of ideas which it is assumed that all right-thinking people will accept without question... Anyone who challenges the prevailing orthodoxy finds himself silenced with surprising effectiveness. A genuinely unfashionable opinion is almost never given a fair hearing, either in the popular press or in the highbrow periodicals ... If liberty means anything at all it means the right to tell people what they do not want to hear," - George Orwell, from his proposed preface to "Animal Farm."

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