In which city did the Haymarket affair of 1886 take place?

The Haymarket affair, a pivotal moment in American labor history, unfolded in Chicago, Illinois. On May 4, 1886, a labor demonstration was held at Haymarket Square, which was then a bustling commercial area near Randolph and Desplaines Streets. The rally was organized in support of workers striking for an eight-hour workday, a movement that had gained significant traction across the nation. Tensions were already high following a violent clash the previous day at the McCormick Harvesting Machine Company, where striking workers and police had confronted each other, resulting in casualties.

The demonstration at Haymarket Square began peacefully with speeches from prominent labor activists. However, as police moved in to disperse the remaining crowd, an unknown individual threw a dynamite bomb into the police ranks. The explosion and the ensuing chaotic gunfire from both sides led to significant casualties, including the deaths of seven police officers and at least four civilians, with dozens more wounded.

In the aftermath, eight prominent anarchists and labor leaders were arrested and charged with conspiracy and murder, despite a lack of direct evidence connecting them to the bomb thrower, and even though some were not present at the rally. The trial was highly controversial, and ultimately, four of the accused were hanged, one committed suicide, and the remaining three were later pardoned by the Illinois governor, John Peter Altgeld, who criticized the trial as a miscarriage of justice.

The Haymarket affair had a profound and lasting impact. It fueled anti-union and anti-immigrant sentiment across the United States, associating the labor movement with radicalism and violence. However, it also served as a rallying cry for workers' rights advocates globally, becoming a symbol of the struggle for fair labor practices. The incident is widely recognized as the origin of International Workers' Day, or May Day, which is celebrated annually on May 1st to honor the contributions of workers worldwide.