Political violence History 70 Politics and government 38 Terrorism 20 Political aspects 17 Social conflict 14 Violence 14 Democracy 8 Social conditions 8 History, Military 7 Ethnic relations 6 Genocide 6 Social aspects 6 Ethnic conflict 5 Foreign relations 5 Nationalism 5 Peace-building 5 Philosophy 5 Political persecution 5 Protest movements 5 War 5 World politics 5 Conflict management 4 Insurgency 4 Right and left (Political science) 4 Violence in women 4 Autonomy and independence movements 3 Bloody Sunday, Derry, Northern Ireland, 1972 3 British 3 Civil war 3