I think that there is a middle-class desire, and maybe an almost universal desire, among many human beings to live in clean neighborhoods, among people like themselves, around people with whom they feel comfortable. That can be exclusive, it could be exclusionary. It could be racist, classist, genocidal, and so on. Most people like comfort. Now what provides a sense of comfort varies. I do think that people who like living in cities like small-scale human interaction and they like the social dimensions of aesthetic diversity that Jane Jacobs wrote about.