The wartime rhetoric of economic democracy and freedom helped to inspire the era’s greatest labor uprising, the 1919 steel strike. Centered in Chicago, it united some 365,000 mostly immigrant workers in demands for union recognition, higher wages, and an eight-hour workday. Before 1917, the steel mills were little autocracies where managers arbitrarily established wages and working conditions and suppressed all efforts at union organizing. During the war, workers flooded into the Amalgamated Association, the union that had been nearly destroyed by its defeat at Homestead a generation earlier. By the end of 1918, they had won an eight-hour day. Employers’ anti-union activities resumed following the armistice that ended the fighting. “For why this war?” asked one Polish immigrant steelworker at a union meeting. “For why we buy Liberty bonds? For the mills? No, for freedom and America—for everybody. No more [work like a] horse and wagon. For eight-hour day.”
In response to the strike, steel magnates launched a concerted counterattack. Employers appealed to anti-immigrant sentiment among native-born workers, many of whom returned to work, and conducted a propaganda campaign that associated the strikers with the IWW, communism, and disloyalty. “Americanism vs. Alienism” was the issue of the strike, declared the New York Tribune. With middle-class opinion having turned against the labor movement and the police in Pittsburgh assaulting workers on the streets, the strike collapsed in early 1920.