Potential locked up in prisons By LEWIS W. DIUGUID The Kansas City Star Angela Davis drew many parallels between slavery and today's growth of the prison industrial complex. Each is a profitable economic system, Davis told more than 500 people last week at the University of Missouri-Kansas City. Slavery boosted the economy of the South, where U.S. wealth until 1865 was concentrated. Prisons today are a boon to rural communities, creating jobs, new housing, restaurants, hotels and other feeder industries. Inmate labor also generates capital. Like slavery, "we've reached the point where the prison economy is not marginal to the...