Roger Kimball is sure that Deutsche Oper’s “Idomeneo” is terrible. But it shouldn’t be banned for political reasons. “Today it was Mozart. Tomorrow perhaps it will be Shakespeare. Or Dante, who after all has a pretty hot place reserved for Muhammad in ‘The Divine Comedy.’ It is not – not yet – too late to put a stop to our habit of appeasing a murderous fanaticism that demands privileges and indulgences it refuses to grant to others.”