Never before have seen the ZA/African situation summed up so well. I have been trying to convey this to my friends in the UK, so that they can understand.
It is one of the interesting facts of human behaviour that, when a group (by class/colour/gender/etc.) have been given a good kicking by their opponents - when they get to be top dog - they will repeat the kicking. On a minor scale, we see this when an individual is abused as a child and will often repeat this in adult life. On a grander scale, Israel is now kicking the Palestinians. This is what humans do.