Hating Africans, especially modern day ones, for the trans-atlantic slave trade is not really understanding what happened. There were a lot of African people against it. Many watched as their friends, family, and countrymen got taken away. Most were afraid they were next. African leaders that participated in the slave trade justified it by saying they were capturing and enslaving enemy tribes, but those enemy tribes were doing the same. So even if the African leaders weren't selling their own directly, they did it indirectly, by supporting the system. If they didn't support it, white people would have had less slaves.
Then there's the fact those same white merchants were just randomly capturing any black person they could find, the African leaders knew this, and still did business with them. At no point did they say "Hmm, these white people are scumbags, taking any black person they can find, and dehumanizing our people. They should be dealt with." Nope. Their people disappearing is the other tribes fault, not white people. I'll continue to do business with them.
