"Early in 1886 labor unions were beginning a movement for an eight-hour day. Union activists called a one
day general strike in Chicago. On May 1 many Chicago workers struck for shorter hours. An active group of radicals and anarchists
became involved in the campaign. Two days later a shooting and one death occurred during a riot at the McCormick Reaper plant
when police tangled with the strikers." (4)
This incident was blamed by the Knights of Labor but they completely denied the strike.