............Two suspects, a 29-year-old and a 21-year-old, have been arrested. The older man is a neighbor Ms. Knoll has known since he was a child. The younger, according to reports, is homeless. One of the suspects told the investigators that the other had shouted “Allahu Akbar” while killing Ms. Knoll, according to Le Monde. (A lawyer for the Knoll family, Gilles-William Goldnadel, confirmed that in a phone call.) On Tuesday, Gérard Collomb, the interior minister, told Parliament that one of the attackers had told the other: “She’s a Jew. She must have money.”

In fact, Ms. Knoll was “poor,” according to her son, Daniel. She’d lived most of her life in the same apartment in the subsidized housing project where she was killed.

It’s a neighborhood that has already borne witness to a nearly identical crime. Almost exactly a year ago, a 65-year-old Jewish widow named Sarah Halimi was murdered by her neighbor, 27-year-old Kobili Traoré. Other neighbors said they heard Mr. Traoré scream “Allahu Akbar” as he beat Ms. Halimi, a retired doctor, to near death in the early hours of April 4, 2017. He then threw her body into the courtyard below.

It took months for Ms. Halimi’s murder to be categorized as an anti-Jewish hate crime. “It was scandalous,” said Mr. Goldnadel, the lawyer, who also represented the Halimi family.

This time, French authorities have been quick to call the crime by its proper name. On Monday, President Emmanuel Macron tweeted: “I would like to express my shock at the appalling crime committed against Mrs. Knoll. I reaffirm my absolute determination to fight anti-Semitism.” On Wednesday, he said that she was murdered “because she was Jewish” at a tribute to a police officer killed in an Islamist attack. Mr. Macron has been widely praised by the country’s Jewish community for his moral clarity in describing anti-Zionism as a “reinvented form of anti-Semitism.”

Anti-Semitism was supposed to be a disease of the far right. But the people actually killing Jews in France these days are not members of the National Front. They are Islamists.

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Only allah knows