Last week, CNN released the results of a survey of European attitudes toward Jews that, although shocking to many, will come as little to surprise to anyone who has paid attention to the issue over the past two decades. Nearly one in four respondents, for instance, reported believing that Jews have too much influence on conflict and wars, and a similar number said the same about business and finance. Yet, writes Bari Weiss, these data don’t capture the “three-headed dragon” that is anti-Semitism in Europe today: violent and often deadly attacks perpetrated almost exclusively by Muslims, obsessive hatred of Israel from a hard left that is becoming increasingly mainstream, and a resurgent anti-Semitic far right. And these trends might not stay in Europe:

[On the far right] is the anti-Semitism of the “Jews will not replace us” marchers in Charlottesville and the killer at the Tree of Life synagogue in Pittsburgh who ranted against globalists and the “kike infestation.” . . .

Islamism is far less of a threat in the United States than in Europe—we do not, contrary to what the president would have you believe, have caravans of terrorists crossing our border. Still, a Muslim American who expressed hatred of Israel shot six people, killing one of them, at the Jewish Federation of Greater Seattle, in 2006. Four Muslim men were arrested in a plot to bomb two Bronx synagogues in 2009. A Muslim convert was thwarted by the FBI in his plan to blow up a Florida synagogue in 2016. Just last week, Mohamed Mohamed Abdi, a Somalian immigrant, shouted anti-Semitic slurs while trying to run down with his car people leaving a Los Angeles synagogue.

[Then] there is the hatred from the left, which comes cloaked in the language of progressive values. This includes the perhaps unwitting anti-Semitism of college professors who refuse to write letters of recommendation for students wanting to study abroad in Israel or who seek to suspend study-abroad programs to Israel entirely, without thinking of sanctioning, say, China or Russia. Or turning a blind eye to unconscionable comments like one from Minnesota’s new congresswoman Ilhan Omar, who tweeted in 2012 “Israel has hypnotized the world, may Allah awaken the people and help them see the evil doings of Israel”—because she is breaking ground as a Muslim woman of color.

For reasons historical, aesthetic, and political, we Jews are most attuned to the anti-Semitism of the far right—and we find the most sympathy among our progressive allies when these are our attackers. But when Jews point out the other two kinds, we are often dismissed as sensitive or hysterical, or as mistaking legitimate criticism of Israel for something darker. This is nonsense. The same was said of the Jews in Europe when they sounded the alarm bells. Look where they are now.

Two extraordinary events demonstrate something important about Israel’s most fervent adversaries. One was a speech given at something called The People’s Forum (funded generously by Goldman Sachs), which stated, “When the state of Israel is finally destroyed and erased from history, that will be the single most important blow we can give to destroying capitalism and imperialism.”

The suggestion that this tiny state is the linchpin of a global, centuries-old phenomenon like capitalism goes well beyond anything resembling rational criticism. Even if Israel were guilty of genocide, apartheid, and oppression—which of course it is not—it would not follow that its destruction would help end capitalism or imperialism.

The other was an anti-Israel protest that took place in front of New York City’s Memorial Sloan Kettering Cancer Center, deemed “complicit” in Israel’s evils. At organizers’ urging, participants shouted their slogans at kids in the cancer ward, who were watching from the windows. Given Hamas’s indifference toward the lives of Gazan children, such callousness toward non-Palestinian children from Hamas’s Western allies shouldn’t be surprising. The protest—like the abovementioned speech—deliberately conveyed the message that Israel is the ultimate evil and its destruction the ultimate good, cancer patients be damned.

The fact that Israel’s adversaries are almost comically perverse does not mean that they can be dismissed. If its allies fail to understand the obsessive and irrational hatred that it faces, they cannot effectively help it defend itself.