I don't know what the Israeli police said or did (or rather did not do) in this case, but it's probably true that they deserve criticism and it is certainly outrageous to see a Jew beaten by Arabs in Jerusalem.
That said, do you have the slightest idea of what Jews went through in the Warsaw Ghetto ? It is so out of proportion with what's happening in Jerusalem today that your statements really are a gross insult to the memory of European Jewry.