In 1881, Patrick Ford, the Irish-American nationalist editor of the New York Irish newspaper The Irish World and American Industrial Liberator, published The criminal history of the British empire, a collection of five letters that he had written to William Gladstone. In The criminal history, Ford constructed a comprehensive account of British imperial history, beginning with England’s conquest of Ireland, before detailing the colonization of North America, Britain’s participation in the transatlantic slave trade, the American Revolution, British rule in India, the opium wars, and Britain’s contemporary colonization of Africa. This article contributes to scholarship on American views of the British empire in the post-bellum United States. In exploring how Ford constructed a Manichean interpretation of world history, where the British imperial project devastated every region it invaded, the article analyses Ford’s reasons for writing and publishing the letters that formed The criminal history. Finally, the article shows that Ford’s central purpose was to foster a visceral hatred of the British empire among his Irish-American readership, to maintain a commitment to their ethnic heritage as proud Irish people, and to encourage his readers that a better future would soon arrive, when the British empire was finally a relic of the past.