J.D. Vance says people on the left are much more likely to defend and celebrate political violence than people on the right. “The data is clear,” he claims. But a lot depends on how pollsters ask the question—and who is president when they’re asking.

Also, last weekend Elon Musk appeared on a huge screen in London to address a rally organised by Tommy Robinson, a convicted criminal who preaches anti-Muslim bigotry. Mr Musk imagines a MAGA-like movement galvanising countries across Europe, as it has in America. The problem is, lumping together Europe’s hard-right forces is misleading. They are taking different paths in Britain, France, Germany and Italy.