Why we have abandoned buildings in the capital city

Abandoned buildings in the city of Tshwane, aka Pretoria or Pitori.
I look at the story of Schubart park, from Apartheid to democratic South Africa.
In future, I'd like to do a full-on documentary on this subject matter, looking at urban decay and the impact on people's livelihoods.
Schubart Park is a story of social housing and urban renewal gone wrong. It exemplifies the legacy of Apartheid in the form of city planning, but also the failures of the current government.