Step 1: May Day's Roots:
International Workers' Day (Labour Day, May Day) is observed on May 1st in numerous nations. It stems from the 19th-century fight for workers' rights, specifically the push for an eight-hour workday.
Step 2: Linking to the Historical Incident:
The Second International, a global alliance of socialist and communist parties, selected this date to honor the Haymarket Affair.
The Haymarket Affair (or Haymarket Riot) involved a bombing during a labor demonstration on May 4, 1886, at Haymarket Square in Chicago, USA. The demonstration initially supported striking workers demanding an eight-hour workday, following a police incident where workers were killed or injured. This event became a symbol of the global workers' rights movement, and May 1st was chosen to mark the general strike that began on that date in 1886, leading to the Haymarket Affair.
Step 3: Conclusion:
International Labour Day on May 1st commemorates the Haymarket Affair, Chicago.