History African Americans 17 Civil rights 14 Politics and government 10 Race relations 10 Civil rights movements 9 Civil rights workers 9 Authors, American 8 Political and social views 8 Businessmen 7 History and criticism 7 Journalists 7 Social conditions 7 Advertising executives 6 American literature 6 Emigration and immigration 6 Foreign relations 6 Inventors 6 Presidents 6 Spies 6 Cold War 5 Criticism 5 Critics 5 Intellectual life 5 Research 5 Social aspects 5 Theater 5 Women 5 Actors 4 Advertising 4