An American Planning Association blog post broke down the main arguments made by Associate Professors Michael Manville, Paavo Monkkonen and Michael Lens in their collaborative piece “It’s Time to End Single-Family Zoning.” The article was one of several commentaries by academics and practicing planners included in the January issue of the Journal of the American Planning Association, which focused on the debate over single-family zoning. Manville, Monkkonen and Lens traced single-family zoning’s “racist and classist history” through Supreme Court decisions including Buchanan v. Warley (1917) and Village of Euclid v. Ambler Realty Co. (1926). The impact of these century-old decisions can still be seen in the racial and class makeup of cities in the United States, they said. Arguing that socioeconomic and racial inequality and transportation inefficiency are exacerbated by the single-family classification, they called on planners to lead the charge to change the zoning laws.