While American college campuses appear obsessed with pointing out various forms of hidden (and often imaginary) bigotry, anti-Semitism remains singularly tolerable. Lawrence Summers writes:

It has seemed to me that a vast double standard regarding what constitutes prejudice exists on American college campuses. There is hypersensitivity to prejudice against most minority groups but what might be called hyper-insensitivity to anti-Semitism. . . .

Instances of anti-Semitism by this standard are ubiquitous in American academic life. Nearly a dozen academic associations have enacted formal boycotts of Israeli institutions and in some cases Israeli scholars. Student governments at dozens of universities have demanded the divestiture of companies that do business in Israel or the West Bank. Guest speakers and even some faculty in their classrooms compare Israel to Nazi Germany and question its right to continued existence as a Jewish state.

Yet, with very few exceptions, university leaders who are so quick to stand up against microagressions against other groups remain silent in the face of anti-Semitism. Indeed, many major American universities, including Harvard, remain institutional members of associations that are engaged in boycotts of Israel. The idea of divesting from Israel is opposed only in the same way that divesting from apartheid South Africa was opposed—as an inappropriate intrusion into politics, not as immoral or anti-Semitic.

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.