> due to class warfare to keep the "riff-raff" out of desirable neighborhoods Actually, the exact opposite is the case: US zoning laws were created by the 1910

> due to class warfare to keep the "riff-raff" out of desirable neighborhoods Actually, the exact opposite is the case: US zoning laws were created by the 1910s/1920s era "progressive" movement as a leftist social improvement project. The goal was to legally require that poor people would thenceforth all live in such conditions as the (mostly bourgeois) progressives deemed correct and "proper" according to middle class mores of the day, by making other conditions illegal. See e.g. "Living Downtown" by Paul Groth for more info: http://publishing.cdlib.org/ucpressebooks/view?docId=ft6j49p0wf&brand=ucpress http://publishing.cdlib.org/ucpressebooks/view?docId=ft6j49p... https://en.wikipedia.org/wiki/Progressive_Era https://en.wikipedia.org/wiki/Progressive_Era