Best tell him them.
At the moment I’ll accept his report as accurate, given his credentials and the liklihood that, if he had let a personal race-based bias bend his conclusions, they should have gone the other way.
http://jhfc.duke.edu/johnhopefranklin/
Oops, he’s dead. So go ahead and attack his research and conclusions, since he can’t rise up and defend them.
Then by all means check out the figures for yourself and then tell me that they make sense to you. 1860 Census
If this same professor stated that 78% of all black men today suffer from the effects of slavery on their ancestors would you be so quick to accept his statement? Or would you say, "Whoa, that can't be right" and dig into it yourself?