Yep.
To add to all this - he actually said zionists couldn't understand English irony despite having lived here all their lives - not just a long time - making it crystal clear Jews will never be 'really' English, like Jeremy and his lovely brother Piers.
He campaigned for the early release of the terrorists who bombed a Jewish community centre in finchley.
The foreword you correctly mention - he said that it was a brilliant and perceptive analysis of history - the book says the Jews deliberately caused all world wars (one of the oldest antisemitic tropes)
He wanted to 'give tea on the terrace of the house of commons' to Raed Salah who has openly declared death to the Jews and spread the blood libel.
He was silent and refused to help the Jewish mps Luciana berger and Margaret hodge when they directly approached and asked for his help when they were subject to vicious antisemitic abuse within the Labour Party.
It's all in the ehrc report and there's loads more. And he eventually lost the Labour whip because even when the report was published , he simply blamed it on the Jews again.
Multiple non Jewish posters in this thread have shared their first hand experiences of horrifying, open antisemitism in constituency Labour parties.
There is so, so much evidence and it's all been in the public domain for a long time now.
Anyone still denying it at this point is an outright liar and a supporter of racism.
I'm posting this stuff not for the racist corbynite you were replying to, but for other, decent people reading the thread who might really not know this stuff.
As we've seen in this thread though, corbyn is just an unpleasant symptom and representative of a particular type of white European antisemitism that runs very very very deep and is very old