Look, I know that the current way of addressing past grievances hasn't worked ok, but this isn't about the ANC addressing past grievances and it could have very serious implications for South Africa.
This is about power, the ANC has been losing electoral support for some time and one of its former members, Julius Malema, who has actually been threatening whites and who's pretty firebrand split off and created the Economic Freedom Fighters that's a pretty extreme party.
The ANC is using land expropriation as a populist plank for this years general election, whether they will get the numbers to amend the constitution is another story, whether it can be challenged in court I'm not sure, but should they proceed with the plan, it will surely drive away many international investors and could have serious consequences for the already struggling economy which hasn't grown much in the last few years, coupled with endemic poverty and lack of job opportunity has lead more and more poor South Africans into the arms of extremists like Malema.
You do not understand the actual dynamics at play here, and American right wingers who are picking up on this story don't understand it either.
All I can say is, while the current way land reform was being done may not have done right by those who were wronged, land expropriation could severely harm the economy, leading to more people unable to lift themselves out of poverty, leading to a further destabilization of the country, it's one of the most unequal societies on Earth, due to historical consequence and this could very well ignite a fuse that blows up the fragile peace Mandela worked so hard to achieve.
So don't you lay something like that at my feet, as a South African, I think I know better.