So I hope you realize the error of your statement. Nowhere did South Africa "gas" their ghetto's, nor did Switzerland help. Research was done on nerve agents, and crowd control measures (two separate research goals) and a number of other substances, which almost all countries did similar military research. Furthermore there is allegations of birth control research but this the evidence is flimsy, controversial and nowhere is it alleged that it went any further than research.

So good sir, you are absolutely mistaken.

PS. thanks for getting back with a link.

As a post script, Apartheid was bad but it was not much more than legalized discrimination. Let's not demonize Apartheid any more than for what it really was. And the current situation in South Africa is far worse than the situation ever was during the reign of Apartheid.