You don't even need to go that far, you can just point out Nelson Mandela, Desmond Tutu, Patrice Lumumba, Kwame Mkrumah, Marcus Garvey*, Leonard Howell, Toussaint Louverture, Masna Musa, and someone educated on world history can probably name many more without reaching.

*Immigrated to America, might not count for our purpose