I still remember well how the New Labour faction, in order to attack Corbyn, deemed him an anti-semite by association because in a conference he sat on a panel with a guy who compared the actions of Israel to those of the Nazis. Turns out said guy was a Jewish Holocaust survivor, so they they were saying that a Jewish Holocaust survivor was an anti-semite in order to slander Corbyn by association.

Also quite a lot of Israel-linked “Jewish” associations cooperated in that whole campaign of slandering Corbyn and Labour as “anti-semite” (remember how the Labour Party was said to have “many” anti-semites, and they turned out to be in a lower proportion than society in general and way less than the Tories) to bring Corbyn down and replace him with somebody from the New Labour faction, which succeeded.

The New Labour leadership has quite the debt to the Zionists for that, so don’t expect them to be any less unwaveringly supportive of a genocidal ethno-Fascist Israel than the Tories - at best it’s going to be like Biden in American: claim to want Bibi to stop all the while by action de facto supporting him.