I remember the activist campaigns and the movie Cry Freedom about Steve Biko, another SA activist, had a significant impact on my worldview growing up. As revolutions and coups go it was clearly a success. I'd wonder how much of a role their electronic opsec played in it. I think it was the ANC and its activists organizing the coalition of other countries to sanction and isolate the government that ultimately caused…
To be honest, I was prepared to see all white South Africans as evil oppressors, and it took me a while to see that there was a spectrum -- many of whom I met -- from oppressors to opportunists to passive enablers to freedom/justice fighters.
One of my distant relatives in South Africa was decidedly racist, but mourned how his son had gone from playing with the children of black farmworkers to, after a stint in the South African Defence Forces, being a vicious white supremacist.