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Campaigners and a few Labour MPs have criticised the party's new code of conduct on anti-Semitism.
The code states that "anti-Semitism is racism. It is unacceptable in our party and in wider society".
But it doesn't enroll in full to the International Holocaust Remembrance Alliance's working definition of anti-Semitism.
Labour MPs Chuka Umunna, Liz Kendall and Anna Turley are amongst these criticising the omission.
Mr Umunna posted on Twitter he was "utterly appalled":