Weegy: he Haymarket Riot — sometimes also called the Haymarket Tragedy, depending on who is telling the story — was a labor demonstration which took place in Chicago on 4 May, 1886. [ While the demonstration started out peacefully, a bomb was thrown when police ordered the marchers to disperse. A policeman was killed by the bomb, and the police reacted by advancing their line and firing on the demonstrators. An unknown number of demonstrators were injured and killed, and several police were injured as well. The aftermath of the Haymarket incident is often pointed to by people who wish to illustrate problems with the justice system in the United States in the 1800s. ] User: definition of monroe doctrine? (More)