History -- Political violence -- History 5 Autonomy and independence movements 2 Ethnic conflict -- 2 Politics and government 2 Violence -- 2 more ... Bloody Sunday, Derry, Northern Ireland, 1972 1 Collective memory -- 1 Congresses -- 1 Demonstrations -- 1 Derry (Northern Ireland) -- 1 Guerrilla warfare -- 1 HIstory -- 1 History, Military 1 Human rights -- 1 Political persecution -- 1 Political violence 1 Social aspects -- 1 Social conflict -- 1 State-sponsored terrorism -- 1 Terrorism 1 Terrorism -- 1 less ...