Violence Social conditions 14 History 10 Politics and government 10 Riots 9 Case studies 7 Religious aspects 7 Revolutions 7 Aggressiveness (Psychology) 5 Crime 5 Research 5 Christianity 4 Government, Resistance to 4 Social ethics 4 Terrorism 4 Congresses 3 Demonstrations 3 Power (Social sciences) 3 Race relations 3 Social conflict 3 Social history 3 Aggressiveness 2 Attitude (Psychology) 2 Bibliography 2 Crimes against 2 Ethnic relations 2 Families 2 Fiction 2 Law enforcement 2 Liberty 2