What happens when people in slums revolt?

The straightforward answer is: South Africa, from July 9 to July 18, 2021. As a background to what occurred, see: 2021 South African unrest.

Here is a video of the recent events in South Africa:

where do such rebellious people come from? Slums. And it only takes some event such as the killing of George Floyd in the United States for the alienated poor to go on a rampage. Below are videos describing some slums around the world.

Here is a video of the Kibera Slums in Kenya:

Here is a video of a slum in Mumbai:

Here is a slum in Rio de Janeiro, Brazil:

Lunik 9, the biggest Roma slum in Kosice, Slovakia, Europe: