Read this article today and was amazed. A former fencing champion named Rodney Wilkinson joined up with the ANC. Rodney had been working at the plant which was under construction. A black draftsman he worked with looked the other way when he took the plans for the plant to copy. He was trained by the ANC in espionage tradecraft, and was given 4 limpet mines to place around the reactors. Since the plant was under construction, there was no nuclear material on site. To minimize the risk of casualties, the operation would occur on the weekend. Rodney was successful and escaped and was able to return to South Africa after the fall of Apartheid.
Really incredible story!
It was never directly endorsed by the ANC, and generally condemned by them, albeit not the individuals accused of the practice. They referred to the practice as “necklacing”. The closest I am aware of an endorsement of it was from Nelson Mandela’s wife Winnie who said in 1986:
All that said, I’m never surprised when state violence is thrown out liberally that there is a counter effect. If you treat people like animals for long enough they will eventually oblige you.