The International Labor Defense (ILD) (1925–1947) was a legal advocacy organization established in 1925 in the United States as the American section of the Comintern's International Red Aid network. The ILD defended Sacco and Vanzetti, was active in the anti-lynching, movements for civil rights, and prominently participated in the defense and legal appeals in the cause célèbre of the Scottsboro Boys in the early 1930s. Its work contributed to the appeal of the Communist Party among African Americans in the South. In addition to fundraising for defense and assisting in defense strategies, from January 1926 it published Labor Defender, a monthly illustrated magazine that achieved wide circulation. In 1946 the ILD was merged with the National Federation for Constitutional Liberties to form th