"By adopting an antisemitic platform, the Green Party of England and Wales has become a racist party. We will treat it accordingly.
"No political party has the right to tell Jews that a central part of our identity, rooted in thousands of years of history, faith and peoplehood, is racist.
"The Green Party's policy brands much of our community, including our synagogues and communal organisations, with that slur. It gives prejudice against Jews a political licence.
"The Green Party's leadership must now take responsibility for reversing this policy and confronting the antisemitism it has legitimised."