Alternately, they could have a series about the Roman Empire, which had lots of slaves, with both the slaves and slave owners all being white.
That show would NEVER work!
They need the blacks to be in command and power, to show them that they (the African Americans) CAN and WILL overcome all the racism that is still rampant and streaming out of all of the Government offices in systematic order which is caused by and repeated by ALL the white people in America, still today!
DUH!