How were blacks treated in South Africa in the 1970s?

Look up "Apartheid"

They constituted ⅚ ͭ ͪ South Africa, hijacked by some Dutch speakers who wanted another Dutch-land & in collusion with the likes of the arch-Imperialist Cecil Rhodes (it is good that his statue is being confined to the dung-heap of History, never to be recalled again)created this grotesque monstrosity , the "Apartheid" (=apart hood) which means separateness in plain English.
It ensured that these natives were denied any rights in their own land where their forefathers for a thousand generations, the land being usurped by a third generation (& third rate) Dutch & second generation British. For these white skins there was nothing to loose & all enjoyment only, with an added bonus of working the native population in sub-human conditions as Labour at zero cost, worse than the institutionalised Black slavery in North America. All of them devout, with a Bible in hand, committing the most heinous crime in Christianity for which there is no atonement either here or hell. It is the very negation of human values & against the human spirit

READ THE BOOK!!