may 4, 1886 - Haymarket Square Riot

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The Haymarket Square Riot occurred on May 4, 1886, in Chicago, when a peaceful rally in support of workers striking for an eight-hour day turned violent after someone threw a bomb at police. The incident resulted in the deaths of several police officers and civilians, and it led to a highly controversial trial and the execution of four anarchists, significantly impacting the labor movement and public perception of labor unions in the United States.

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