It is especially rankling to constantly read or hear about how all the Nazi war criminals went to work after WWII for the West (when some of them went to work for the Communist bloc as well), but when it comes to the Middle East since the Fifties it is simply ludicrous to ignore the solid Communist support for the most violent, terroristic, and radical Arab/moslems and the universal use of Israel as a punching bag by international revolutionaries. Have these people forgotten that the PLO supported every Communist regime in the world (the same regimes which anti-Semitic "anti-Communists" so claimed to oppose)? What about the PLO being among the very first foreign visitors to Sandinista Nicaragua?
I've always thought people who ignore Communist anti-Zionism to concentrate only on Nazis have some sort of ideological ax to grind. To adopt this attitude when it comes to the Arab world is practically to advertise it to the world.
I think that most non-Jews are completely unaware of the Nazi connection to ME Islamists. Perhaps it is well-known among Jews, but it is not known among non-Jews. And that is the simplest part of the equation to communicate.
As I said before, totalitarianm is totalitarianism. Whether it has a communist or fascist flavor, they are still much the same.
During WWII in the Balkans, most of the British proclaimed Communist Comrade Tito to be this great "freedom-fighter" who fought the Nazis at every clip and turn. But in fact, Tito's righthand man Milovan Djilas who later turned dissident said, "This absolutely untrue. Our lines with Nazi Germany were open until the final days of the war. We were most worried about a British landing and were preparing ourselves to destroy them if they tried it."
But the West (Britain & the US) simply refused to believe that communists and fascists were more alike than different. So in fact we did protect and save some of these Nazis from prosecution, because we thought that they might be useful in the defeat of communism. Bad assessment. Left with blowback.