I worked in Afghanistan for 6 years to 2008. Some of the most competent international aid workers I encountered there were white women from South Africa. What’s sadly happening in SA is the end result of racism by low-IQ easily- manipulated blacks. (See The Bell Curve.)
When whites ran RSA, the army was set at the borders, to keep out the many blacks, from other African nations.
Once "SAINT NELSON" and the ANC took over, that was more or less stopped; ergo, many of the blacks, now living in RSA are ILLEGAL ALIEN INVADERS and have very low IQs!