That's life in Brazilian big cities.
Brazil has been very violent for a long time because the government enforces a zero-sum game against the population. The poor half of the population is overwhelmingly colored people and the richer white half would rather burn it all down than share it better. Brazil is one of the most unequal societies on the planet.
If we go that direction globally, security will erode everywhere.
Trust me, we don't want that. You don't want every metropolis to become like a big Brazilian city.
Go find some Brazilian media website and read the news. It's pretty grim. It's what society is like with persistent high inequality, a forced zero-sum game to preserve status quo and the resulting general insecurity.