Blind spots. In his book, EXCLUDED: How Snob Zoning, NIMBYism, and Class Bias Build the Walls We Don't See, RICHARD KAHLENBERG points out not only how restrictive zoning laws negatively influence all sorts of things in this country, but also that such laws are more likely or more restrictive in communities that are otherwise more liberal and progressive. KAHLENBERG also testified on the side of doing away with race-based affirmative action in higher education. It’s a provocative conversation. You can learn more at richardkahlenberg.org