He got it right... slavery was evil and those who owned slaves were cowardly in the least. Not one to be proud of.
Whoa!
Think you're going a little overboard here.
People who owned slaves did so because it was normal for their time and positions. Many of them treated their slaves with more care and understanding than their other workers. [Yes, because they were a valuable commodity to many].
And remember, it was blacks who captured and enslaved them to start with!