Frank Hammer, former President of United Auto Workers (UAW) local 909 in Detroit and retired GM worker, explains how “legacy” workers are standing up for new hires. This is critical to building working-class solidarity. He also reflects on the history of autoworker strikes in the U.S. and in Mexico, reminding us of the deadly incident at the Ford Cuautitlán plant, in which thugs dressed in Ford uniforms shot dead one of the workers and injured ten others.