It doesn't feel like such a bold claim to me. Dividing neighborhoods (i.e. redlining) lead to ghettos, inner city violence, white flight, etc., Today there is b

It doesn't feel like such a bold claim to me. Dividing neighborhoods (i.e. redlining) lead to ghettos, inner city violence, white flight, etc., Today there is barely any remnant of the middle class in major urban areas and more traffic than ever. City planners (and policy makers) are not civil engineers.