This lecture discusses the Irish Labour movement from 1921-1924, following the Irish War of Independence and Civil War. It covers: 1. The post-war economic slump in Ireland and Britain in 1921, and the Irish Trade Union Congress's pledge to resist wage cuts. 2. The establishment of the Irish nationalist state through the Anglo-Irish Treaty in 1922, and the outbreak of civil war between pro- and anti-treaty factions. Prominent anti-treaty leader Liam Mellows was executed that year. 3. Letters written by Mellows from prison in 1922 calling on republicans to make their social and democratic program more clear and to prioritize winning support from Irish workers.