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 these lyrics, some listeners still considered it to be a rebel song—even one which glorifies the events of the two Bloody Sundays to which the lyrics refer. Commercially, the single had its biggest impact in the Netherlands, where it reached number 3 on the national charts. In the US, the song gained significant album-oriented rock radio airplay, and together with the earlier "New Year's Day" helped expose U2 to a mainstream American rock audience. Critical reception to the song was positive. In the Irish magazine "Hot Press", Liam Mackey wrote that "Sunday Bloody Sunday" "takes the widescreen view...a powerful riff