The female voices rose high-pitched and shrill above the crowd: “Five, six, seven, eight, Israel is a terrorist state.” “We don’t want no Zionists here, say it loud, say it clear.” “Resistance is justified when people are occupied.” The voices that answered them were also overwhelmingly female, emanating from hundreds of students chanting and marching around tents pitched in front of Columbia University’s neoclassical Butler Library, part of an effort in late April to prevent the university from uprooting the encampment. The female tilt among anti-Israel student protesters is an underappreciated aspect of the pro-Hamas campus hysteria. True, when activists...