Political violence -- History -- 9 Terrorism -- 8 History 6 Politics and government -- 6 Islam and politics -- 5 Politics and government 5 more ... Violence -- 5 Case studies 4 Islam 4 Religious aspects -- 4 Conflict management 3 Ethnic conflict -- 3 Ethnic relations 3 Political violence 3 Congresses -- 2 International relations 2 Jihad 2 National state 2 Prevention 2 Radicalism -- 2 Social conflict -- 2 Terrorism 2 1998 1 Autonomy and independence movements 1 Bioterrorism -- 1 Bloody Sunday, Derry, Northern Ireland, 1972 1 Civil War -- 1 Collective memory -- 1 Communalism -- 1 less ...