Who was involved: McCormick Haversting Machine Company laborers, Chicago Police
Why did it start: Began as a peaceful rally in support of workers striking for an 8 hour day. Then turned into a riot after someone threw a bomb at police.
Who eneded: The Chicago Police dispersed the crowd.:
What was the historical significance: International symbol for workers rights.
What happened: It was a peaceful riot and then became violent when somebody through a bomb into the crowd. Protesters were protesting an 8 hour work day.
"No single event has influenced the history of labor in Illinois, the United States, and even the world, more than the Chicago Haymarket Affair. It began with a rally on May 4, 1886, but the consequences are still being felt today. Although the rally is included in American history textbooks, very few present the event accurately or point out its significance" William J. Adelman