>Communities did not turn to zoning in response to infill being disallowed.

??? Zoning is the mechanism to disallow infill, it can't come in response to it. The book "The Color of Law" by Richard Rothstein covers how zoning as used as a new tool for racial exclusion in its third chapter. Indeed, modern socal remains a highly segregated area thanks to zoning decisions that ensure working class people, who are predominantly nonwhite, will find no suitable housing they might afford in the various lily white strongholds.

Ridiculous. Every community in Socal is massively more integrated than it's ever been. Quit making shit up and then geting inraged by it and actally look at the numbers.