Sunday Bloody Sunday (John Lennon and Yoko Ono song) government into removing its troops from Northern Ireland, shortly before Lennon moved to New York. On 30 January 1972 at a protest march in Derry, 13 marchers were killed by members of the 1st Battalion, Parachute Regiment. The killing was quickly dubbed "Bloody Sunday". Lennon, who was living in New York at the time, was enraged by the massacre and wrote "Sunday Bloody Sunday" as an angry response. The lyrics of "Sunday Bloody Sunday" express Lennon's anger. Ben Urish and Ken Bielen explain that the lyrics "start off with some nice rhetorical spins and a modicum of insight" but eventually
Sunday football in Northern Ireland football on Sundays was strictly enforced so that no club affiliated with the IFA could play football in Northern Ireland on Sundays. This included the Northern Ireland national team who also refused to play international matches on Sunday. Before the 1958 FIFA World Cup, it was noted that Northern Ireland would play Czechoslovakia on a Sunday. As a result, the IFA relaxed its Sunday football ban to permit the Northern Ireland national team to play football on Sundays outside of Northern Ireland. In 2001, Cliftonville attempted to play a friendly match against Derry City, who are based in County Londonderry