The problem with your statement is failing to understand that Africans were oppressed for being darker than Europeans. They formulated a theory to even support that notion i.e. Theory of Race. Genocide happened in Africa but no records were taken while in Germany, the Nazis were recording every killing they made. What Mngxitama's tweet was highlighting the danger of Helen Zille's opinion on colonialism. Unfortunately your hate for Mngxitama blinded you from the intention of the statement.