History 486 Popular culture 300 Social aspects 226 Politics and government 198 History and criticism 149 Civilization 117 Underground press publications 114 Social conditions 108 Civil rights 98 Political culture 85 Counterculture 81 Political aspects 80 Protest movements 79 Race relations 77 Vietnam War, 1961-1975 75 Political activists 73 Mass media 70 Social life and customs 67 Intellectual life 60 Foreign relations 54 American literature 53 African Americans 44 Radicalism 42 Student movements 42 Motion pictures 41 Social movements 33 Economic aspects 31 Relations 31 Political activity 29 Feminism 28