Politics and government History 278 Political culture 191 Underground press publications 112 Social conditions 106 Civil rights 93 Protest movements 79 Counterculture 77 Political activists 75 Vietnam War, 1961-1975 71 Political aspects 69 Civilization 48 Race relations 46 Student movements 46 Politics and culture 42 Popular culture 39 Economic conditions 38 Intellectual life 38 Political activity 38 Nationalism 37 Radicalism 37 Social aspects 37 Social life and customs 36 Social movements 31 Social change 25 Foreign relations 22 Public opinion 22 Democracy 21 Cultural policy 19 Communism 16