I don't not if this true, because you seem to hate everything white and/or Jewish. But assuming you are accurate. The white South Africans success has nothing to do with oppressing the majority or using their political might that they don't have! Affirmative action, which is not justifed in most incidents, can only be justified (as we had here in America) for an overtly oppressed minority. If is illogical and counter-intuitive to use such a campaign for the majority and the political elite!
If the whites in South Africa are truly thriving int he work place it more has to do with individual efforts and NOT racism!
Yes you are you are justifiing it and apologizing it. Same way you do for Islamic terror

Mixed race maybe because neither the blacks nor the white usually accept them. But Blacks are 80% of the country, so your discrimination claims are baseless and well make you look like the ignorant person you are!
Yes against WHITES. Whites are the ones that need the special protections as a hated minority, not the dominate Black majority!