Political violence -- History 3 History -- 3 1998 1 Bloody Sunday, Derry, Northern Ireland, 1972 1 Communalism -- 1 Demonstrations -- 1 more ... Derry (Northern Ireland) -- 1 Ethnic conflict -- 1 Guerrilla warfare -- 1 History, Military 1 Islam 1 Islam and politics -- 1 Peace movements -- 1 Politics and goverment -- 1 Politics and government 1 Politics and government -- 1 Religious aspects -- 1 Social conflict -- 1 Terrorism -- 1 Violence -- 1 less ...