This is what Karl Marx wrote about jews. If you are in any way a committed socialist it is your dogma to be followed faithfully. Is Mr Corbyn that committed?
“What is the worldly religion of the Jew? Huckstering. What is his worldly God? Money. … Money is the jealous god of Israel, in face of which no other god may exist. Money degrades all the gods of man—and turns them into commodities. … The bill of exchange is the real god of the Jew. His god is only an illusory bill of exchange. … The chimerical nationality of the Jew is the nationality of the merchant, of the man of money in general.” Karl Marx, “
On the Jewish Question,” 1844
This is one of the milder quotes I found.