Which U.S. labor union led the 1894 Pullman Strike before the federal government intervened?

The American Railway Union led the 1894 Pullman Strike before the federal government intervened.

The union was led by Eugene V. Debs and represented workers across different railway crafts. It supported employees of the Pullman Company after wage reductions were imposed while rents in the company town near Chicago remained high.

The strike began in May 1894 and expanded when the American Railway Union called a boycott of trains carrying Pullman cars. Rail traffic across much of the United States was disrupted. The federal government obtained an injunction and sent troops, arguing that the strike interfered with delivery of the mail and interstate commerce.

The conflict ended in July 1894, and the union was weakened severely. The Pullman Strike is often connected with Labor Day history because Congress established the federal holiday later that year, amid continuing national labor tensions.