Uuuuhhhh,
Since ancient Greeks owned slaves,
Since the ancient Romans owned slaves,
Since the ancient Egyptians owned slaves,
And since the American Indians made slaves of members of conquered tribes as slaves BEFORE THE EUROPEANS invaded and 'stole' their land,
Then tear down the Parthenon, the Colosseum, the Pyramids and take away ALL Indian run Casinos!
We dare Ya!