"White flight" didn't "create the ghettos" but was a symptom of the rampant violence that was endemic to them. Your premise is that you can't put a bunch of minorities in one area without the area going to hell, and that it's only white people who keep it all together, in my opinion, is racist.
More bull shit as if you know anything of history. The violence followed to the vacuum created by the higher income whites moving out.
https://www.npr.org/2017/05/03/526655831/a-forgotten-history-of-how-the-u-s-government-segregated-america
https://www.thedailybeast.com/how-we-built-the-ghettos
You should already see where this is going: Existing black neighborhoods were lined as unsafe, and thus ineligible for financing. For prospective property owner, this was terrible: Absent cash on hand, there was no way to afford a home or a business in your area. What’s more, blacks were all but barred from entering white neighborhoods, if not by restrictive
racial covenants (which forbid property sales to African Americans and other minorities) then by violence and intimidation. In Chicago, for instance, anti-black riots were a regular part of public life. Here’s Arnold Hirsch, author of
Making the Second Ghetto: Race and Housing in Chicago, 1940–1960:
On July 28, 1957, a crowd of 6,000 to 7,000 whites attacked 100 black picnickers who occupied a portion of the park that had previously been “reserved” for whites. Though blacks had used the park in the past, they were customarily restricted to certain portions of it. More than 500 police were needed to calm the area after two days of disturbances. On the first day alone at least forty-seven persons were injured and sixty to seventy cars stoned. Rioters spilled out of the park, attacked police officers attempting arrests, and, eventually, placed the entire area between the nearby Trumbull Park Homes and Calumet Park in turmoil. Police squadrons had to form a “flying wedge” to break through the crowd to rescue blacks besieged in the park.
In the late 1940s, he writes, there was “one racially motivated bombing or arson” every twenty days.
In short, redlining forced blacks into particular areas and then starved those areas of affordable capital. Combined with widespread job discrimination—which barred blacks from public employment and forced them into low-wage labor—you had neighborhoods that were impoverished by design.