The “Haymarket Affair,” May 4, 1886. A bombing and a police fusillade killed eleven people and injured about 150 more. Pinkerton detectives played a key role in the ensuing investigations into Chicago’s labor and anarchist movements.
Members of the Protective Patrol on strike duty in Hocking Valley, 1884. The Patrol ignited a fierce battle over who should police American communities – and often drew fierce backlash from local communities.
“Strikers, Communists, Tramps, and Detectives” (1878) used the chaos of the 1877 strike to sell the Agency’s services. Detectives and patrolmen could restore order and guard against a second outbreak of communist-led strike violence.