Answer:
That labor rally received that name from anarchists groups in Chicago; it was originally intended to be a protest to get an 8 hours workday by workers, but it developed into violence which was blamed on labor unions such as "The Knights of Labor" which had a decline in memberships; it also impacted the rest of unions.
After the riot, employers became more wary and distrustful of labor unions, especially because they ended up not getting enough favorable policies.
Step-by-step explanation: