Both mainstream Jewish groups and their allies in the Biden administration are determined to avoid taking on left-wing Jew-haters and the ideas that drive them. Can you oppose antisemitism while at the same time make common cause with Jew-haters, their organizations and the ideas that propel them forward? The answer from the Biden administration and their allies that control the legacy organizations that purport to speak for American Jewry is “yes.” That is a point that has been repeatedly clear in recent weeks as once again, the political left has shown itself incapable of responding to the growing problem of...