Britain’s antisemitism crisis could trigger legal reckoning at home and abroad

That morning in Golders Green, one of London’s most visibly Jewish neighborhoods, a man ran through the streets with a knife looking for Jews to stab. He found them. A 70-year-old man. Another in his 30s. Both were attacked outside a synagogue.

By then, the response had become predictable. "Deeply concerning." A line so worn it had lost all meaning. The next day, the U.K. government raised the national threat level "from substantial, meaning an attack is likely, to severe, meaning an attack...