If you’re Jewish, or Jew-ish, or merely subscribe to the view that Jews should be trusted to recognise anti-Semitism rather than be accused of making false allegations to further their own malign agenda, the chances are you could do with a laugh right now. The resurgent far right’s threat feels frightening but expected, whether from torch-waving American mobs or European ethno-nationalists directing the restive masses’ anger towards the traditional target, presently embodied by George Soros.