In 1937, Walter Reuther and his United Autoworkers Union had brought General Motors and Chrysler to their knees by staging massive sit-down strikes in pursuit of higher pay, shorter hours and other improvements in workers’ lives. But when Reuther and the UAW set their sights on the Ford Motor Company’s River Rouge complex in Dearborn, Michigan, Henry Ford made it clear that he’d never give in to the union.

Source: How the Ford Motor Company Won a Battle and Lost Ground | History | Smithsonian