The African Blood Brotherhood for African Liberation and Redemption (ABB) was a radical U.S. black liberation organization established in 1919 in New York City by journalist Cyril Briggs. The group was established as a propaganda organization built on the model of the secret society. The group's socialist orientation caught the attention of the fledgling American communist movement and soon evolved into a propaganda arm of the Communist Party of America. The group was terminated in the early 1920s.
During the second decade of the 20th century, a socialist movement for the liberation of American blacks began to develop in the Harlem section of New York City. The movement included a substantial number of immigrants from the British West Indies and other islands from the Caribbean region, who, having been raised and educated as part of a racial majority population in their homelands, had found themselves thrust into the position of an oppressed racial minority in America. As products of the unequal system of colonialism, many of these newcomers to America were predisposed to hostility towards capitalism and the notion of empire-building.
One of these transplants from the Caribbean was Cyril Briggs, born in 1888 on the island of Nevis, who immigrated to Harlem in the summer of 1905. In 1912, Briggs was hired as a journalist by one of the black community's leading newspapers, the New York Amsterdam News. He worked there throughout the years of the First World War. Inspired by the rhetoric of "national self-determination" espoused by President Woodrow Wilson, in September 1918 Briggs launched a monthly publication called The Crusader, to promote the idea of "repatriation" of blacks to a decolonized Africa, a concept similar to the contemporary notion among some European Jews of Zionism and "return" to Palestine.