On this day, March 7, in 1932

Police kill 4 strikers at a Ford plant in Dearborn, Michigan. Also known as the River Rouge Massacre, the Dearborn police fired into the crowd of 3000, killing 4 and wounding at least 50. Henry Ford's factories had a well-deserved reputation for brutality and violence. Ford also had a secret police that closely watched employees, infiltrated union meetings, and stifled all radical activism before it could become organized resistance.