Haymarket Affair | History, Aftermath, & Influence | Britannica
https://www.britannica.com/event/Haymarket-Affair
WEBMar 15, 2024 · Haymarket Affair, violent confrontation between police and labor protesters in Chicago on May 4, 1886, that became a symbol of the international struggle for workers’ rights. It has been associated with May Day (May 1) since its designation as International Workers’ Day in 1889.
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