The Troubling Question in the French Jewish Community: Is It Time to Leave?

How can anyone be allowed to paint a swastika on the statue of Marianne, the goddess of French liberty, in the very center of the Place de la République?”

That was what the chairman of one of France’s most celebrated luxury brands was thinking last July, when a tall man in a black shirt and a kaffiyeh leapt to the ledge of Marianne’s pedestal and scrawled a black swastika. All around him, thousands of angry demonstrators were swarming the square with fake rockets, Palestinian and Hamas flags, even the black-and-white banners of ISIS. Here, barely a mile and a half from the Galeries Lafayette, the heart of bourgeois Paris, the chants: “MORT AUX JUIFS! MORT AUX JUIFS!” Death to the Jews. It was Saturday, July 26, 2014, and a pro-Palestinian demonstration turned into a day of terror in one of the most fashionable neighborhoods of the city.

“Do something! Do you see what is happening here?” the chairman said to a line of police officers watching the demonstration build to a frenzy. “What do you expect us to do?” one officer said, then looked away...