It's weird for me that I have to explain to my dc (in their 20s) about the very recent history of South Africa. They know about Mandela of course. But not being alive during the atrocities of the white South African governments, police etc. featured on the news regularly . @tobee
My family left South Africa in the mid 60s (I was 3, db was 1) because of apartheid. My father apparently already had a secret police file because of his activities at Uni (where he'd been "converted" to be anti-apartheid by his mentor, who was to become my godfather). They weren't 100% sure that they would be allowed to leave and weren't going to tell my mother's parents the departure details (as they were the only ones who could have told the secret police that we were leaving, as dad was going to sell his farm to his brother and was keeping it very quiet - it was not on the open market: dad saw the file on him on the car seat of the guy "enquiring" about the farm being on the market
)
I was therefore brought up to be very aware of what was going on and actively supported both the economic and sporting boycotts (I used to make a point of telling greengrocers that I couldn't wouldn't buy their fruit because it came from SA. 
I had loads of arguments at Uni with friends about why the boycott mattered - and why the sports boycott particularly mattered as that was what was getting through to the "ordinary" white South African who had rhetorical vote for whom sport was a religion. 
Ds studying PIR at Uni was due in large part because of how much we talked about this sort of thing: not just at home but also at our weekly dinners with my dad (his grandfather). He is still very interested in what is happening in SA (and the recent elections) but his particular area of interest is the Chinese oppression of the Uyghurs.
At least what was happening in SA was mostly happening in the glare of publicity (eg Biko) whereas the Chinese are able to hide and obfuscate what is happening to the Uyghurs 
I remember reading somewhere that both right and left come together like a horseshoe with similar authoritarian instincts. Unfortunately recent world events seem to be demonstrating the truth of that 