Which of the following was not a result of the Haymarket Square riot of
1886?
(A) Passage of an eight-hour workday for workers
(B) Increase in membership of the Knights of Labor
(C) Greater association of labor unions with anarchists
(D) Passage of antitrust legislation
(E) Enactment of child labor laws
It was "(D) Passage of antitrust legislation" that was not a result of the Haymarket Square riot of 1886, since these protests had to do with creating safer and fairer working environments--such as setting an eight-hour work day.
