The campus protests may be winding down, but don’t worry — now the really expensive and destructive phase begins: the litigation. This warms my heart. But then, as a law professor, I’m basically in the business of selling law degrees. The campus protesters, and to some degree the universities where they protested, seem to have thought that the law didn’t apply to their actions. A New York City police officer looks over the center of Columbia University, the usual site of a large graduation ceremony. AP They’re likely to discover that they were wrong. The union representing Columbia’s custodians is...