Task: Text Categorization
Input (English): Albert Parsons led a march down Michigan Street in a parallel to this event that did not end in violence. As a result of this event, August Spies and 7 other men were hanged after quick and dubious trials. After Samuel Fielden spoke, a member of the crowd threw a bomb at a police officer, which killed him. The Knights of Labor were blamed by the public for this event, although it was primarily caused by desire for an 8 hour work day. FTP, identify this May 4, 1888 event which saw a violent conflict between laborers at the McCormick Harvester plant and the police.
Output (English): History