Terblanche is such a bad representation of the Boers as they are today. He's a throwback to the 50's. And I say 'boers' loosely as they're known as Afrikaners. They're not racist in an obvious way, just more of a fact that mixing with blacks would be so unthinkable that there's no point even talking about it.
I can only think of one other race where mixing with Africans would NEVER occur and that's the Namibian Germans. Those people would shoot a black on sight had it been lawful.