Task: Text Categorization
Input (English): Following the Supreme Court case regarding this event, the defendants sang the Marseillaise before being executed. Samuel Fielden was speaking when this incident started. One man indicted for this event shouted ""The time will come when our silence will be more powerful than the voices you strangle today!" and prosecutors indicted eight people for inciting this event. Police officer Mathias Degan was killed during this event, which inspired the creation of May Day. August Spies was among the anarchists hanged after this event. For 10 points, name this 1886 event in which a pipe bomb was thrown into a Chicago labor rally at the namesake location.
Output (English): History