Matt already commented upon Menachem Rosencraft's article about the growing threat of right-wing anti-Semitism reemerging in Europe. As you might expect, it was almost an even split between people who thought that anti-Semitism was wrong and people who thought...otherwise. The most common defense took the following forms...
Saying that it is the responsibility of Jews to convince Europeans not to hate them, most notably by giving money to poor people (see the last paragraph).
Outrage that Jews are bothered by people who hate them:
Cheering on that anti-Semitism:
And of course, blatant Holocaust denial:
All approved by the Huffington Post moderators, of course.