What was the result of the Haymarket Square bombing in $1886?$

a$.$ It led to increased sympathy for workers and unions.

b$.$ It resulted in the election of several German$-$born anarchists to the Illinois state legislature.

c$.$ It led to the arrest of the police who fired on the crowd.

d$.$ It resulted in intensified animosity toward labor unions.

e$.$ It led to the passage of the Interstate Commerce Act.