Great. I’m from the South too. The 1950s and 1960s have nothing to do with the 1850s and 1860s.
The cover for the Jim Crow era is the same that you are using. Rather than slavery it protected those wishing to oppress the descendants of the slaves.
Jim Crow produced a situation wherein the Blacks were arguably worse off than under slavery.
They had no protection unlike the time they were someone’s property who had an incentive to protect that property. Excessive brutality would not get the work force to work harder or even as hard.