His so-called charity work is extremely suspect and I would highly suggest you investigate further before giving him too many kudos. Also I'm not sure why you've given him the benefit of the doubt considering he's lied about this before. Absolutely no reason to think he isn't lying again now.
On the absolutely miniscule chance that you're actually asking and are not just being a sea lion I will explain this to you. Whenever someone brings up the transatlantic slave trade, a racist will respond with saying well what about the Arab slave trade. This happens with stunning regularity. That's why everyone who's been around long enough will recognize it for the dog whistle it is. That's why the upvotes and downvotes are the way they are here. We've all seen it a hundred times. It is an extremely well-known dog whistle.
You seem to be confusing who you are replying to here.