Chicago's Three Neighborhood Types and Why it Needs a Fourth

True Chicagoan writes that Chicago needs a fourth type of neighborhood, a type that it doesn't have, one that's ethnically and economically heterogeneous and safe. He identifies three existing neighborhood types: gentrifying, deteriorating, and "family-friendly" (generally the white bungalow belt). Gentrifying neighborhoods are increasingly unaffordable, deteriorating neighborhoods are crime-ridden and, well, deteriorating, and the family-friendly neighborhoods are hyper-fearful of "change" and defensive (and bigoted) because of it. I think a lot of this stems from several historical causes:

• Mayor Richard J. Daley's use of the expressways to segregate races in the 50's and 60's.
• The racial and social upheaval of the 60's and 70's.
• White flight to the suburbs in the 70's and 80's, redlining, rise in crime, and fear of plummeting property values due to the prospect of overnight neighborhood change.

Other cities do seem to have pleasant, affordable, and integrated communities. Chicago should strive to have them too.