Returning to tribalism in Chicago

Chicago Homicides

The dire conditions under which black residents live in Chicago seem like an insurmountable problem. Gang violence, drugs, poverty, and a poor educational system are endemic in certain areas, and the city’s Democratic leadership does not seem interested in addressing these issues. Of course, the primary issue in Chicago is arguably the outrageous homicide rate.
Most of the violence is related to gang activity. But Chicago is unique among similarly afflicted cities in that its gang violence problem is not just the result of poverty or cultural issues. One of the worst aspects of these homicides is that very few cases are solved, meaning most of the criminals responsible do not face justice.

Then most of the tribes die off but the one that remain are those that captured the Ice Gene somehow.  The successful Blacks keep their nose out of the street, and escape from Chicago, mostly to Texas. Chicago becomes another Detroit. Takes a few hundred years to acquire the Ice Gene and learn separation of powers.