Fiction Radicalism Jews 12 Labor and laboring classes 11 Utopias 10 Strikes and lockouts 9 African Americans 7 more ... History 6 Socialism 6 Communism 4 Ethnic groups 3 Germans 3 Irish fiction 3 Polish people 3 Science fiction 3 Slavery 3 Coal miners 2 Economic conditions 2 History and criticism 2 Italians 2 Jews, Russian 2 Lithuanians 2 Politics and government 2 Proletariat 2 Russians 2 Slovaks 2 Social problems in literature 2 Africans 1 Agricultural laborers 1 American fiction 1 American wit and humor 1 Bonus Expedition Force, 1932 1 British 1 Catholics 1 Cheyenne Indians 1 Children of immigrants 1 Chinese 1 Clothing workers 1 Collective settlements 1 Cooperative societies 1 less ...