History 18 Politics and government 9 Social conditions 6 Communism 5 Revolutionaries 5 Folklore 3 Assassination 2 Biography 2 Communists 2 Conservation of natural resources 2 Critics 2 Dialectical materialism 2 Dialogism (Literary analysis) 2 Fiction 2 Foreign relations 2 HISTORY / Revolutionary 2 History and criticism 2 Intellectual life 2 Literature 2 Methodology 2 Motion picture producers and directors 2 Philosophy 2 Philosophy, Marxist 2 Political persecution 2 Political prisoners 2 Statesmen 2 Tales 2 World War, 1939-1945 2 Astronautics 1 Church and state 1