In 1935, the United Auto Workers labor union was formed, and in 1936 the UAW organized the Flint Sit-Down Strike, which initially idled two key plants in Flint, but later spread to half-a-dozen other plants including Janesville, Wisconsin and Fort Wayne, Indiana. In Flint, police attempted to enter the plant to arrest strikers, leading to violence; in other cities the plants were shuttered peacefully. The strike was resolved February 11, 1937, when GM recognized the UAW as the exclusive bargaining representative for its workers.