The International Fur and Leather Workers Union (IFLWU), was a labor union that represented workers in the fur and leather trades. The IFLWU was founded in 1913 and affiliated with the American Federation of Labor (AFL). Radical union organizers, including Communists, played a role in the union from its early years. They took control using violence in the 1920s, and it became one of the major bases in the labor movement. Irving Howe says that the Communist used: shock troops, a sort of paramilitary vanguard handy with knives, belts, pikes.