Proletariat 44 History 23 History and criticism 12 Proletariat in literature 11 Communism 10 Socialism 10 Working class 9 more ... Dictatorship of the proletariat 8 Social classes 7 Capitalism 6 Civilization 6 Politics and literature 6 American literature 4 Intellectual life 4 Middle class 4 Social psychology 4 Economic conditions 3 Economic history 3 Intellectuals 3 Japanese literature 3 Political and social views 3 Politics and government 3 Radicalism in literature 3 Social conditions 3 Social problems in literature 3 Working class in motion pictures 3 Working class writings, American 3 American fiction 2 Children's literature, Japanese 2 Experimental fiction, Japanese 2 less ...