Not only that - there were thousands of blacks who were slave owners. In New Orleans alone more than three thousands blacks owned slaves.
And, before the 1800’s, several Native American tribes are documented to have enslaved other Native Americans from different tribes.
Perhaps a sequel to this film is in order?
“12 Years A Slave Owner”
It's about a cruel Black slave owner who is shamed in to freeing his slaves by a kind and loving white abolitionist.