I had already interviewed Chuck Schumer, the Senate Democratic leader, for his new book, “Antisemitism in America: A Warning,” when President Trump accused him of being “a Palestinian” who was “not Jewish anymore.” A few days later, Schumer decided to postpone his book tour after joining Republicans to support a stopgap spending bill to avoid a government shutdown — one that would have played straight into Trump’s hands. Furious progressives were threatening a demonstration at every stop.

Derided by the MAGA right and yelled at by the far left? Outside of Katz’s Delicatessen, it’s hard to imagine a more Jewish place to be.

As Schumer told it in his modest Brooklyn apartment over gluten-free cookies (and disquisitions about digestive issues), he’s been in that place most of his adult life. The son of an exterminator, he went to Harvard in the fall of 1967 and quickly got involved in antiwar politics. But never as a student radical.

“I didn’t like the left taking over buildings,” he told me, adding he believed in working through the system, not against it. Student militants “didn’t want to debate; they wanted to call people names.”

Harvard was also the place where Schumer first saw left-wing antisemitism in action — using the cloak of anti-Zionism, as it often does today. At a 1970 campus speech by the Israeli foreign minister, Abba Eban, students in the gallery unfurled a banner that read,fef777 Fight Zionist Imperialism. Schumer’s book recalls Eban’s reply:

“I am talking to you up there in the gallery,” Eban said. “Every time a people get their statehood, you applaud it. There’s only one people, when they gain statehood, who you don’t applaud, you condemn it — and that is the Jewish people.” The double standard — whether it was about who could work in what profession or move to Moscow in the Czarist empire, or who could have a state — was the essence of antisemitism.

It’s notable, and politically gutsy, that Schumer’s book devotes plenty of space to exposing leftist antisemitism, including calling out congressional colleagues like Representative Ilhan Omar of Minnesota for antisemitic outbursts. He also calls out campus anti-Israel demonstrators, like a protester at a U.C.L.A. rally screaming, “Beat that fucking Jew” next to a piñata bearing the likeness of Benjamin Netanyahu, the Israeli prime minister, or a masked thug at Columbia telling Jewish students that “the seventh of October is going to be every day for you.”

80win

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The contention that police officials had minimized the severity of Ms. Gahalal’s injury came a day after the Police Department released video footage of the episode that appeared unlikely to end questions about whether the officers had acted appropriately under the circumstances.

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