In general, ideology or political movement that mobilizes the population (often, but not always, the lower classes) against an institution or government, usually in the defense of the underdog or the wronged. Whether of left, right, or middle political persuasion, it seeks to unite the uncorrupt and the unsophisticated (the 'little man') against the corrupt dominant elites (usually the orthodox politicians) and their camp followers (usually the rich and the intellectuals). It is guided by the belief that political and social goals are best achieved by the direct actions of the masses. Although it comes into being where mainstream political institutions fail to deliver, there is no identifiable economic or social set of conditions that give rise to it, and it is not confined to any particular social class.
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