That’s a pretty ahistorical statement.
Plantation owners and slaveholders used the legal system to enact a second set of laws specifically intended to make freed black Americans subject to white rule and operated workplaces, schools and public spaces with separate rules.
The American prison system even has a carve out in the 13th amendment that allows the operation of a majority black prison in the south as a plantation where prisoners aren’t paid for their labor. To this day. There is an actual factual black slave plantation right now.