A middle school principal in the “progressive,” affluent town of Lexington, Massachusetts, is under fire — deservedly, in my view — over a missive sent to community families in which he apologized to certain students who were supposedly offended by a portion of the curriculum.The issue arose after seventh-grade students attended a session about antisemitism, apparently in connection with their Holocaust education. Dr. Johnny Cole, the administrator in question, said the lesson pursued an “important goal,” then launched into an apology.“Some of you felt unseen,” he wrote, lamenting that some students felt as though their “history, identity, and community” had...