History 42 Politics and government 18 Social conditions 14 Race relations 12 Social life and customs 10 African Americans 9 Economic conditions 7 more ... Indians of South America 6 Civil rights 5 Emigration and immigration 4 Ethnic relations 4 Jews 4 Puerto Ricans 4 Riots 4 Foreign relations 3 Guerrillas 3 Mexican Americans 3 Race discrimination 3 Spanish 3 Violence 3 Black power 2 Blacks 2 Civil rights movements 2 Ethnic identity 2 Government relations 2 Human rights 2 Immigrants 2 Indians, Treatment of 2 Indigenous peoples 2 Land tenure 2 less ...