I do not defend the Christian missionaries in Africa but the biggest religious outrage was by the Muslims. It was them who were the buyers in tribal Africa and they left their religious beliefs behind in many areas. The Irony is that many blacks in America embrace this religion thinking that it was that of their ancestors.
Slavery was not and is not always white on black. It is and was dispicable and eradication, not apology is what should be demanded of all humanity. History is history and we can not change that except to learn from it. That we can't seem to do!