much of angola prison is farmland. thousands of cattle are raised here and sold on the open market and a variety of crops are grown here as well. all of it happening with inmate labor. that's one of the many hot button issues in the mass incarceration debate. >> another day in the field. >> i'm on my way out to the fields riding in this truck. many of the men are convicted killers, including the ones sitting on either side of me. 28-year-old javonte sanders beat a woman to death and stole her car. >> what is your sentence. >> life. >> terry mays shot a man in the neck during a drug deal. >> you have been here how many years? >> 30. >> 30 years. >> here, like prisons everywhere in america, most inmates get paid pennies per hour.