Just because Jews are the victims of the holocaust doesn't make them saints, and that doesn't give Israel the right to commit war crimes to others. That is not a "left" insight. Rather a "just" insight. If you rob me, and I in turn rob somebody else, I'm still a thief.
Criticizing the political actions of a Jewish nation is not nazism. Condemning the Jews just for being Jews is and that is not what so-called "lefists" are doing (joke is that you don't even know what "left" and "right" means in politics, but then again, few people do).
However praising Israel for whatever they do, turn a blind eye for whatever they do, just because they are Jews (which is what this meme is doing) is equally as bad as condemning them for just being Jews. "Positive" discrimination is STILL discrimination!!! PERIOD!!!
If you deem people who detect a fault in people who coincidentally happen to be Jew in the same league as the nazis, I'm afraid you need to learn to stop thinking in absolutes!