That was not Mandela's dream and was never his goal.
PS: This article minimizes a lot of tribal savagery.
Zulu, Bantu, Hutu, Tsutsi, etc... have tribal or group tendencies of violent cruel treatment to one another for a thousand years. Without a white devil to unify against, they will murder each other by the millions.
Whatever is your goal is irrelevant when you set this stuff in motion. Mandelea's acts made this "goal" inevitable.