The Haymarket Square Riot refers to the violent confrontation between labor protesters and police in Chicago on May 4, 1886. What began as a peaceful rally in support of striking workers at the McCormick Harvesting Machine Company quickly escalated when a bomb was thrown at police officers, resulting in fatalities on both sides. The ensuing gunfire led to further casualties and widespread panic.
This event holds significance for Advanced Placement United States History students because it exemplifies the labor unrest and social tensions prevalent during the late 19th century. It underscores the conflict between workers advocating for better working conditions and the perceived oppression of industrialists and the government. The riot also marked a turning point in the labor movement, leading to increased anti-union sentiment and the association of labor activism with anarchism and violence in the public eye. Its inclusion in APUSH curricula highlights its pivotal role in shaping American labor relations and public discourse surrounding social justice.