Reflecting on recent terrorist attacks around the world, Cynthia Ozick recalls hearing a prominent novelist a decade ago arguing the need to understand the “humanity” of terrorists. To Ozick, this sort of reasoning—perhaps particularly tempting for writers of fiction—leads only to moral muddle:

[N]otions of . . . impoverishment, grievance, impotence at the hands of powerful faraway forces, humiliation, spiritual misery (a fresh coinage particularly worthy of the novelist’s art) . . . have become unassailably commonplace to the point of vacuous triteness. And more: terror can now be counted among matters urgently spiritual.

What comes of these divinings is, finally, a confusion of categories. The Paris atrocities, the Jerusalem stabbings, the San Bernardino shootings are not chapters in a novel to be intensively parsed. A novel is a cultural artifact. A human mind, whatever culture it is born into, is privately, even instinctively, free to enact individual will. Everyone . . . can choose whether to murder or not to murder. . . .

At bottom, an open-hearted willingness to understand everyone is an appalling distraction from the intrinsic depravity of the act of premeditated murder. The evil deed speaks for itself; to search out the evildoer’s “backstory,” to look for some exculpating raison d’être, is no more useful or edifying or moral than an attraction to pornography.

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.