Oh no!! Maybe he should go back in time and prevent the developement of chatel slavery, if he's so worked up about the historical representation of slavery in-general.
That said, chatel slavery seems alive and well in the US Prison system. Maybe some of us really are too distracted by the history to bother fixing things in the present. Mr. Mangione allegedly might have something to say about it. Maybe I just wasn't paying enough attention at that cookout, back on December 4th.