Maybe they lost the memo about how it's not anti-Semitic. It certainly looks anti-Semitic, so unless you get the physical memo it's an easy mistake to make:

The controversial cartoon by syndicated cartoonist Pat Oliphant that appeared on the New York Times and the Washington Post websites last month, and was also used by other American newspapers, has since been reproduced on neo-Nazi websites worldwide... Oliphant depicted a woman carrying a baby being pushed off a cliff by a goose-stepping headless figure holding a Star of David with sharp fangs. The cartoon has also now been reproduced, with the caption "Zionist Nazism," on the website of the Lebanese terrorist group, Hezbollah.

This nudge-wink "it's just anti-Zionism" game has always been a little surreal. No newspaper would ever publish an article accusing a black politician of "publicly lynching his opponent in the press." The unseemliness of inverting the history of anti-black violence would border on bigotry. And no newspaper would ever print a cartoon that depicted cascading Sub-Saharan instability as a black male "Africa" assaulting a white female "Europe." Invoking racist tropes to incite public outrage is, well, racist.

But Israeli Jews as baby-killing Nazis? That just sophisticated and brave anti-Zionism.

I'm actually surprised that anti-Israel partisans are still bothering with the formality of "Zionist Jews" as opposed to just "Jews." It's the equivalent of those "Death To All Juice" signs at the pro-Hamas rallies, where the fanatics unblinkingly insisted that they weren't talking about Jews at all. Except I guess that editors would treat "Juice" as a typo and ask Mearsheimer to correct it.

So "Zionist Jews" it is.

References:
* WaPo/NY Times's "anti-Semitic" cartoon becomes Hezbollah propaganda [NRO / Tom Gross]
* "Death to all juice": Calling for genocide with plausible deniability? [Jihad Watch]
* John Mearsheimer - Not Anti-Semitic. Just Anti-Semiticish [MR]

Previously:
* Israeli Public Diplomacy Expert : British Boycott Is Vicious Anti-Semitism
* John Mearsheimer - Not Anti-Semitic. Just Anti-Semiticish
* Hamas Decides to Be Helpful, Illustrates Many Ways International Law is Structured Against Israel