Lennon's song The Luck Of The Irish was written in late 1971 to accompany a documentary film about the political situation in Ireland. Lennon was a staunch supporter of the Republican movement, who wanted to see the province of Northern Ireland (then, as now, under British rule) integrated into the independent nation of Ireland. He appeared at several rallies and demonstrations in support of Republican organizations, and also contributed money to those who were campaigning to end discrimination against Catholics in Northern Ireland. Lennon had originally hoped to release The Luck Of The Irish as a single early in 1972, but this plan was abandoned because he was involved in a dispute with his music publishing company. The song was eventually released on the Lennons' June 1972 album Some Time In New York City, alongside another song inspired by events in Northern Ireland, Sunday Bloody Sunday.
Lennon subsequently re-used portions of this letter as a press release to explain his rationale behind writing the song.