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proletariat
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bourgeoisie
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Red Terror
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kulaks
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Okhrana
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April Theses
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Iskra
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commissar
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The working classes
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Capital-owning class
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Persecution of suspected Bolshevik opposition
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Affluent peasants
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Tsarist secret police
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1917 document calling for socialist revolution
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Pre-1917 Russian socialist newspaper
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Communist Party minister or delegate