This never happened under Apartheid.
Apartheid was instituted for the official reason of controlling the “influx” of tribals in a disorderly manner. So here’s Jo’berg without “influx control”. Apartheid was awful. But this is no improvement, either.
And it is relevant to the “sanctuary cities” and cities with huge homeless populations, because with so much excess humanity, you have unruly swarms of people taking over abandoned buildings, and they’re causing fires, too.