Pinkerton Detectives: Pinkerton Detectives were private security agents hired by companies during strikes or labor disputes. They often engaged in violent tactics against striking workers on behalf of their employers.
Haymarket Affair: The Haymarket Affair was an event that occurred during a labor protest in Chicago in 1886. A bomb exploded at the protest rally, leading to violence between police officers and protesters. It further fueled public fear about potential violence associated with labor unions.
Homestead Strike: The Homestead Strike was a violent conflict between steelworkers represented by the Amalgamated Association of Iron and Steel Workers and the Carnegie Steel Company in 1892. It resulted in casualties and reinforced public fear of labor unions.