Opinion writer Bari Weiss got chased out of The New York Times for her political views — not because she’s an uncompromising conservative, but because she is a moderate. In our team-sports era of politics as tribal warfare, we’re expected to be all-in for one side or the other. Figures such as Weiss or slightly nonconforming public figures such as author J. K. Rowling (a liberal feminist who expresses some reservations about transgender orthodoxy) or Goya CEO Robert Unanue (whose firm is being boycotted because he said something nice about Donald Trump) are a problem for the cheap moralists and...