I would disagree that blacks want to stay segregated on the whole. What is happening is the city Politicians, specifically Democrats who run the cities, want blacks to to stay put. Itās even Black politicians that may think as you do. How and why is this done? Simple. Promise a lot of free stuff without having to work for it. Or, better known as communist style welfare. Itās done because the Democrats will ask for them to buy their votes. Including and especially black BLM communists. Been going on now for decades.
Aside from that, different cities will have a different slang and even dialect as well in some instances. Ebonics is an Oakland, CA. thing.