Political activity Race relations History 50 African Americans 33 Politics and government 31 Political aspects 29 Civil rights 24 Social conditions 21 Civil rights movements 18 Minorities 16 Immigrants 10 Racism 10 Ethnic relations 9 Blacks 8 Cultural pluralism 7 Civil rights demonstrations 6 Political participation 5 Race identity 5 Slavery 5 Social aspects 5 Women 5 Antislavery movements 4 Civil rights workers 4 Coalitions 4 College students 4 Economic conditions 4 Election 4 Ethnicity 4 Presidents 4 Religious aspects 4