The Holocaust. (Heres some filler text because answers need to be at least 20 characters long for some reason)
They were treated as slaves. Meaning they were beat, forced to dirty work and even killed.
The <span>political, economic, and social movement meant to create solidarity amongst people all over the world who can trace their ancestry to Africa is known as Pan-Africanism movement.
All people of African descent are encouraged to foster solidarity because they have the same background. Unity is vital for economy, according to this theory, which is why in order to make Africa better, all Africans have to unite as one.</span>