Protest movements 796 History 425 Politics and government 280 Vietnam War, 1961-1975 143 Social movements 121 Social conditions 119 Political activity 99 more ... Political aspects 94 Social aspects 66 Political participation 54 Peace movements 43 Government, Resistance to 41 Political activists 39 Democracy 36 Radicalism 33 Demonstrations 32 Student movements 31 Arab Spring, 2010- 29 Civil rights 27 Race relations 27 World War, 1914-1918 26 Democratization 23 Revolutions 23 Social conflict 23 Women 23 Dissenters 22 Political violence 21 African Americans 20 Economic conditions 19 Foreign relations 19 less ...