Bloody Sunday (1921) all had been killed or fatally wounded in Belfast. At the time the day was referred to as "Belfast's Bloody Sunday". However the title of "Bloody Sunday", is now more commonly given in Ireland to events in Dublin in November 1920 or Derry in January 1972. A strict curfew was enforced in Belfast after the violence, to try to ensure the Orange Order's 12 July marches passed off peacefully. Directly after the violence, on 11 July, the Commandant of the IRA's 2nd Northern Division, Eoin O'Duffy, was sent to Belfast by the organization's leadership in Dublin to liaise with the
Sunday Bloody Sunday after the September 11, 2001 attacks, the "no more!" interlude was replaced by Bono holding an American flag. "Sunday Bloody Sunday" was used during the Vertigo Tour of 2005 and 2006, often alongside "Bullet the Blue Sky" and "Love and Peace or Else" as a trio of politically driven songs performed during the middle part of the band's set. Bono extended the "no more!" interlude to explain a headband he had donned in the previous song. The headband depicted the word "coexist" (written to depict a crescent, a Star of David, and a Christian cross). The Coexist symbol is trademarked