I recently resigned as a trustee of the University of Pennsylvania and an overseer of its law school to protest the shameful treatment of law professor Amy Wax. Her career-threatening offense was to state that in her experience with black students over 17 years at Penn, few had performed in the top half of their class. Penn Law’s dean, Ted Ruger, declared her in error but refused to provide evidence. For dissenting from politically correct orthodoxy, Mr. Ruger forbade Ms. Wax to teach her much-admired first-year course in civil procedure—for which the university gave her an award in 2015.
Since...