The anti-Semitism comes from the fact that Israel definitely knew an attack was coming and DELIBERATELY allowed it, so that they could destroy Israel. As I said above, its this caricature of Jews as bloodthirsty and secretly collaborating behind the scenes, this reversal of Jews as victims to Jews as perpetrators, that makes it anti-Semitic.
The Israeli army have killed 10 THOUSAND children in the past few months. They are coming across as pretty bloodthirsty to me. That does not mean I think all Jewish people are bloodthirsty.