Yes! He reminded them that those men were slave owners. That's the way it was at the time, sad to say. But it is a fact.
(begin sarcasm...) Oh, never mind....let's just demolish every bit of our history while we're at it. No more family vacations to Civil War sites, etc.
Next on the agenda: No more trips to CO, CA, etc., to visit old mining towns. After all, those folks who participated in the Gold Rush were just "raping" the Earth...
No, we were all just dropped in by aliens and given all the supplies necessary to live. No one had to die to build railroads, coal mines, skyscrapers, or in other ways create wealth for the future generations.
California brought in Chinese laborers and they were not treated well at all.
The irony is that while they(the press) rail and spin like mindless drooling lunatics at the unchangeable past they are the biggest cheerleaders for modern-day slavers of all kinds. Some are just useful idiots and others are... not.