 Growing crops for the greater good? Just saying, communists. A two-year Associated Press investigation linked the supply chains of some of the world's largest and best-known companies, from Walmart to Burger King to Angola and other prison farms, where incarcerated workers are paid pennies on the hour or nothing at all. Several companies, including Cargill, have said that they have cut ties with the process of doing so on prison farms and companies that are incarcerated labor.