[nephihaha]

Some Afrikaners resent British people and Anglophone South Africans, and this dates back to the Boer Wars and beyond. The British interned large numbers of Afrikaners and some of them died in their camps. They marginalised their language, and tried to replace it with English in administration (much the same as with the Québecois etc). The Afrikaners remembered all this, and the insecurity it gave them was partly what led to apartheid and attempts to reinstate Afrikaans as the main national language.

We tended to hear a lot about black-white relations in South Africa, and even fighting between different black African groups... But much less so about the split among whites. I'm told by white South African English speakers that certain Afrikaans speakers were very resentful of them. Some of them didn't like the rugby and cricket boycotts of the 1970s and 1980s either.

It is perfectly possible that some of what you experienced from that teacher came from all this.

I do not agree with this statement though "They were coming over for one reason only." Many South Africans came to the UK for economic reasons, or cultural ties much like Aussie and Kiwis. I had a white South African drama teacher at school and while I could criticise many of my other teachers, I always found him to be pretty easy going. Except in one area. Some of the children used to make fun of his accent and he didn't like that, which I can understand. He came over years before apartheid was dismantled by the way, but never gave any indication of supporting it.