Communism 237 African Americans 22 Politics and government 21 Civil rights 15 Subversive activities 14 History 12 World War, 1939-1945 11 more ... Social conditions 9 Communist 8 Labor unions 8 Race relations 8 Labor and laboring classes 7 Personal narratives 7 Socialism 7 Communists 6 Internal security 6 Anti-communist movements 5 Communist trials 5 Foreign relations 5 Biography 4 Campaign literature, 1948 4 Economic conditions 4 Coal miners 3 Congresses 3 Economic history 3 Emigration and immigration 3 Intellectual life 3 Labor unions and communism 3 Legislators 3 Motion pictures 3 Political activity 3 Propaganda, Communist 3 Youth 3 Civilization 2 Espionage 2 Fascism 2 Germans 2 Intellectuals 2 Jews 2 Museums 2 less ...