On May 4th, 1886, a rally of anarchists and labor activists in Chicago's Haymarket Square turned deadly. An unknown assailant tossed a bomb into a throng of riot police, killing one instantly. In the chaos that erupted, seven policemen were killed, sixty injured, and civilian casualties were likely as high. The event resulted in the convictions of eight men. Learn more with these multimedia resources from American Experience: "Chicago - City of the Century."