What part of “Never again” do they not understand? For decades, the two words have been used as a declaration that nothing like the Holocaust of the 1930s and ’40s would ever again be visited upon the world’s Jews. Never. Again. That’s why Israel was reconvened. “Never again” was once a common phrase on the campuses of leftist universities with large numbers of Jewish students and faculty. Not anymore. America’s elite universities are being torn apart by pro-Palestinian activists — foreign and domestic — launching vicious demonstrations against Israel’s defense of itself following the Hamas …