was there a court proceedings?
Yes, the trial began on June 21, 1886.
Haymarket affair
The trial, "Illinois vs. August Spies et al.", began on June 21, 1886, and went on until August 11. 
what was a result of the haymarket square riot A harsh anti-union clampdown followed the Haymarket incident. where did it take place? Chicago when did it happen? May 4, 1886 who was the accused? Balthazar Rau what was the reason for this attack? The city became a center for many attempts to organize labor's demands for better working conditions. Employers responded with anti-union measures, and this lead to the riot.
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Haymarket affair [SEP] Trial
The trial, "Illinois vs. August Spies et al.", began on June 21, 1886, and went on until August 11. The trial was conducted in an atmosphere of extreme prejudice by both public and media toward the defendants. It was presided over by Judge Joseph Gary. Judge Gary displayed open hostility to the defendants, consistently ruled for the prosecution, and failed to maintain decorum. A motion to try the defendants separately was denied. The defense counsel included Sigmund Zeisler, William Perkins Black, William Foster, and Moses Salomon. Selection of the jury was extraordinarily difficult, lasting three weeks, and nearly one thousand people called.