The postwar years were initially a prosperous time for industrial workers, who achieved middle-class livelihoods, fostered the Baby Boom, and sought better, more spacious housing in safer neighborhoods. These were the years of the creation and popularity of Motown Records. By late mid-century, however, deindustrialization and restructuring cost many jobs. The economy suffered and the city postponed needed changes. Neglect of social problems and urban decline fed racial conflicts. In 1967 there was a major riot in Detroit that burned out the inner city, caused tens of millions of dollars in damages, and resulted in 43 deaths with The U.S. Army being called in to stop it. The violence then spread to several other Michigan cities and was the trigger for a mass migration to the suburbs.