Haymarket Square Bombing Sparks Labor Crisis

Context

Following the Civil War, rapid industrial expansion in the United States brought thousands of immigrants, many from Germany and Bohemia, into Chicago factories where they endured six-day workweeks averaging more than sixty hours for roughly $1.50 a day. Employers countered early union efforts with blacklists, strikebreakers, and private security, while mainstream newspapers often sided with business interests. Labor organizations, including the Knights of Labor and anarchist circles centered on the German-language Arbeiter-Zeitung, pushed a national campaign for an eight-hour workday, setting May 1, 1886, as the target date through the Federation of Organized Trades and Labor Unions.

What Happened

On May 3, 1886, police intervened at the McCormick Harvesting Machine Company plant during a strike, firing on workers and killing at least two. Outraged anarchist leaders quickly printed flyers calling for a protest meeting the next evening at Haymarket Square, a commercial area near Randolph and Desplaines Streets; a line urging workers to arm themselves was removed before wide distribution. The May 4 rally began peacefully under light rain, with speeches by August Spies, Albert Parsons, and Samuel Fielden drawing several hundred to a few thousand listeners. Chicago Mayor Carter Harrison attended briefly, observed the orderly tone, and left; many in the crowd also departed as the weather worsened. Around 10:30 p.m., as Fielden finished speaking, Inspector John Bonfield led a large contingent of police to disperse the thinning gathering. An unidentified person threw a dynamite bomb into the police ranks, killing one officer instantly; gunfire erupted from both sides, leaving seven officers and several civilians dead or wounded.

Aftermath

Authorities arrested more than one hundred people in the following days and charged eight anarchist leaders with conspiracy, though none was proven to have thrown the bomb and only two had been present at the square. The highly publicized trial resulted in death sentences for seven defendants and a fifteen-year term for the eighth; Illinois Governor Richard Oglesby commuted two sentences to life imprisonment, and one defendant died by suicide before execution. Four men were hanged on November 11, 1887.

Legacy

The Haymarket Affair became a lasting emblem of labor repression and judicial unfairness. In 1893 Governor John Peter Altgeld pardoned the surviving defendants, citing a biased judge, packed jury, and fabricated evidence. The episode helped inspire the Second International to designate May 1 as International Workers' Day in 1889, while in the United States it fueled anti-radical and anti-immigrant sentiment that hampered union growth for years and accelerated the decline of the Knights of Labor in favor of the more moderate American Federation of Labor.