Following the recent anti-Semitic outbursts on the part of several American and British celebrities, there have been well meaning attempts to respond with outreach and education, hoping that athletes, musicians, and media personalities can be enlightened out of their prejudice. The success of these efforts remains in question. But, argues Ben Cohen, such an approach cannot work in every case. Take the example of Stephan Balliet who, on Yom Kippur of last year, , attempted to murder the worshippers in the synagogue in the German city of Halle; stopped by a reinforced door, he resorted to killing two passersby before the police arrived. Balliet’s trial, which began last week, reveals a disturbing truth about anti-Semitism:

[T]here are those, like Balliet, who reject notions [of tolerance] as a modern form of Jews poisoning wells, and who are perversely reinforced in their worldviews when they encounter Jews (or those they perceived as Jews) speaking about the Holocaust, or the evils of racism, or the difficulties faced by immigrants in their host societies. No conventional form of education is going to work in these cases.

If we have learned anything from Balliet’s trial so far, it is that we should assume that such attacks are always a possibility, in good times and in bad, and that our resources are best invested in preventing them. When it came to the synagogue in Halle on Yom Kippur last year, that challenge was as basic as stationing a police car outside the building—a measure that was, incredibly, not taken by the authorities in that city, despite the fact that it was Judaism’s holiest, and therefore busiest, day. The analysis of the lonely pathology that Balliet represents will continue, as it must, but it has taken more than enough lives already.

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.