No body cares about the slavery that exists today in Mauritania, NIgeria, Sudan and Libya. Barak Obama's Autobio openly talks about how his African grandfather purchased an African woman for the price of 15 cattle.
When Fascist Italy invaded Ethiopia in the 1930's, slavery was still legal and Mussolini's armies emancipated 3.5 million African slaves from their African slave owners.
That's almost as many African slaves as freed by Abraham Lincoln, yet Mussolin gets no credit.
There has never been any organized opposition to slavery in Africa. All of the organized opposition to slavery in the last 200 years has been in WHITE countries.
Why do you think Blacks from all over the world (Haiti, Somalia, etc) flee to the USA for a "better life" instead of creating a better life in their own lands?