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Propaganda, dissemination of information—facts, arguments, rumours, half-truths, or lies—to influence public opinion. It is often conveyed through mass media. Propaganda is the more or less systematic effort to manipulate other people’s beliefs, attitudes, or actions by means of symbols (words, gestures, banners, monuments, music, clothing, insignia, hairstyles, designs on coins and postage stamps, and so forth). Deliberateness and a relatively heavy emphasis on manipulation distinguish propaganda from casual conversation or the free and easy exchange...