I have found it very interesting to inspect the redlining maps from this era -- many of the divisions they reflected and enforced up to the 1960s-1970s are stil

I have found it very interesting to inspect the redlining maps from this era -- many of the divisions they reflected and enforced up to the 1960s-1970s are still loosely in place today, right down to the "that's the wrong side of the street" level. (http://www.urbanoasis.org/projects/holc-fha/digital-holc-maps/ http://www.urbanoasis.org/projects/holc-fha/digital-holc-map...) Further to your point, another practice that re-distributed whites to the suburbs, to the benefit of shady property developers, is blockbusting. (https://en.wikipedia.org/wiki/Blockbusting https://en.wikipedia.org/wiki/Blockbusting) It also had nothing to do with green lawns and everything to do with racism.