Modern progressive college students have become so militant they’re frightening their own like-minded professors, according to an account posted by one such professor on the website Vox. The professor, using the pseudonym Edward Schlosser, claims to have taught for nine years and currently works at a midsize state college. Over that time, he says, students have decisively shifted to become so protective of their fragile emotions that defying their sensibilities can be “suicidal” for one’s career. “Things have changed since I started teaching,” Schlosser writes. “The vibe is different. I wish there were a less blunt way to put this,...