There is a lot more of these. Please read the book "Slavery By Another Name" by Douglas A. Blackmon.
This is a very interesting book and very informative. Tells of the re-enslavement from the Civil War to WWll.
You thought that slavery had ended but these southern folks found ways to continue the practice by falsely accusing innocent men and woman of crimes that they did not commit. They could not afford the fines and therefore had to serve jail time and were 'sold' to work on many projects on farms, building roads, coal mines, railroads etc.
When their time was up, they would tell them that they had incur new fines and the cycle would start all over again. Sometimes spending most of their lives as slaves.