What labor-related incident occurred in Chicago in 1866?

The Haymarket Square incident in Chicago in 1866 was a significant event in the labor movement, as it marked a pivotal moment in the struggle for workers' rights and the fight for an eight-hour workday. The incident began as a peaceful rally in support of workers striking for better labor conditions, particularly demanding an eight-hour workday. It was organized by labor activists, but it escalated when a bomb was thrown at police officers, leading to chaos and violence.

The aftermath of the Haymarket incident had lasting implications for labor movements in the United States. It resulted in the arrest and conviction of several anarchists and labor leaders, which contributed to a period of heightened scrutiny and repression of labor organizations. This event is often seen as a turning point, raising awareness of labor issues and the need for reform, while also leading to a backlash against unions and worker movements. The Haymarket Square incident is remembered as a symbol of the struggle for workers' rights and the challenges faced by labor movements during that era.