In the spring of 1934, a small group of militant union organizers led Minneapolis truckers on a series of strikes that sought to break the city's antiunion grip. The striking truckers, in protest of scab workers, took to the streets of the city's warehouse district where they faced violent opposition from the police and members of the Citizen's Alliance, a group representing Minneapolis's business community. The conflict exploded when police fired on the unarmed strikers, killing four and injuring countless others. The events surrounding Bloody Friday shifted the balance of power between...