Founded in 1893 by Eugene V. Debs, the ARU was an organization of unskilled railroad workers. Debs brought in ARU organizers to Pullman and signed up many of the disgruntled workers. When the Pullman company refused arbitration, the ARU called a strike against the factory, but it showed no sign of success. To win the strike, Debs decided to stop the movement of Pullman cars on railroads. The over-the-rail Pullman employees (such as conductors and porters) did not go on strike.
Debs and the ARU called a massive boycott (usually called a "strike") that affected most lines west of Detroit and at its peak involved some 250,000 workers in 27 states. The Railroad brotherhoods and the American Federation of Labor (AFL) opposed the boycott, and the General Managers Association of the railroads coordinated the opposition. Riots and sabotage caused $80 million in damages; 30 people were killed.[1][2] The federal government secured a federal court injunction against the union, Debs, and the top leaders, ordering them to stop interfering with trains that carried mail cars. After the strikers refused, President Grover Cleveland ordered in the Army to stop the strikers from obstructing the trains.