Lennon had sympathies for the Roman Catholic Irish minority in Northern Ireland and had joined a protest in London on 11 August 1971 that attempted to pressure the British government into removing its troops from Northern Ireland, shortly before Lennon moved to New York.[1] On 30 January 1972 at a protest march in Derry, 13 marchers were killed by members of the 1st Battalion, Parachute Regiment.[1] The killing was quickly dubbed “Bloody Sunday”.[1] Lennon, who was living in New York at the time, was enraged by the massacre and wrote “Sunday Bloody Sunday” as an angry response.[1]
