“The nation’s economy was built largely on black farm labor: in bondage for hundreds of years, followed by a century of sharecropping and tenant farming. A 1997 report by the U.S. Department of Agriculture said discrimination by the agency was a factor in the decline of black farms. A landmark class-action lawsuit on behalf of black farmers, Pigford v. Glickman, was settled in 1999, and the federal government paid out more than $2 billion as a result. But advocates for black farmers say problems persist.  Reporter John Biewen tells the story of one black farm couple who say the USDA treated them unfairly because of their race in this episode of Reveal.”