The Haymarket affair was a bombing that took place at a labor demonstration on May 4, 1886, at Haymarket Square in Chicago. The rally began peacefully in support of workers striking for an eight-hour work day; it was held the day after a May 3 rally at a McCormick Harvesting Machine Company plant on the West Side of Chicago, during which police killed two strikers by opening fire at the crowd as it surged to the gate to confront strikebreakers. Many others were injured. At the Haymarket Square rally on May 4, an unknown person threw a dynamite bomb at the police as they acted to disperse the meeting, and the bomb blast and ensuing retaliatory gunfire by the police caused the deaths of seven police officers and at least four civilians; dozens of others were wounded.
Haymarket affair defendants:
On November 11, in the year 1887, Haymarket affair defendants:. This event is recorded as a Notable Deaths event in the history of November 11, one of 454 recorded events on this date across all of history.
1 notable person is associated with this event, including Haymarket affair. Learn more below.
Key Facts
- This event took place on November 11, 1887 (AD era).
- It is categorised as a Notable Deaths event in recorded history.
- Referenced in 1 Wikipedia article.
- 1 notable person is recorded as involved in or associated with this event.
- The event is associated with a specific geographical location (see map below).
- Wikipedia source last updated on 22 October 2026.
On This Date in History 454
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
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