The Greens are to vote on a motion that would 'back Hamas terror attacks' and even brand the party leader's mother a racist.
Proponents claim a huge grassroots campaign has led to 'record-breaking' support for the 'Zionism is Racism' proposal which could be debated next month.
If approved, it would become Green policy to support Palestinian 'resistance' from Israel 'by all available means under international law'.
One of the motion's champions, a barrister who has previously tried to get Hamas removed from the UK's terror group list, described this as a 'euphemistic way of saying that the Palestinians have a right to armed struggle, and that we should support it.'
A briefing note accompanying the motion, to be debated at the Greens' spring conference, also spells out that Palestinian 'armed struggle' would be justified.
The motion states that support for Zionism – the belief in the development and protection of the Jewish state in Palestine – should be 'treated as any other form of racism'.
The Campaign Against Antisemitism said that because the 'overwhelming majority' of British Jews identify as Zionist this motion would effectively declare them inherently racist and open the door to a 'frightening witch-hunt.'
Ironically, this could even mean that Green leader Zack Polanski would have to treat his own mother – who has previously posted support for Israel on social media – as a racist.
The motion is proposed by British Palestinian artist Lubna Speitan who has previously backed an 'armed struggle' against Israel and said this week she had been 'heartened and overwhelmed' by the 'record breaking' support her proposal has received
A social media campaign is urging people to join the Green Party just to vote for the motion, with videos on TikTok, X and YouTube providing step by step instructions on how to sign up
Zack Polanski would have to treat his own mother – who has previously posted support for Israel on social media – as a racist
Despite this, Mr Polanski refused to denounce the motion this week saying he 'equivocated' on it because of different interpretations of Zionism.
And it is said to be supported by deputy leader Mothin Ali, who previously appeared to celebrate the Hamas October 7 attacks on Israel in which 1,200 people were slaughtered.
A Mail investigation has also found:
:: The British Palestinian artist proposing the motion has previously backed 'armed struggle' and 'force' against Israel and mocked those who call the attackers terrorists.
:: A social media campaign is urging people to join the Green Party just to vote for it, with videos on TikTok, X and YouTube providing step by step instructions on how to sign up.
:: The government's independent adviser on antisemitism warned the motion openly supports terrorism and racism against Jews and the Greens now had an antisemitism problem far worse than Labour under Jeremy Corbyn.
:: The Board of Deputies condemned the motion and an Israeli minister branded it 'hateful and racist' and warned it called for the destruction of Israel.
:: Jewish Green Party members have told the Mail they feared for their safety if the motion is passed and a group representing them said it would make the party officially 'anti Jewish'.
Backed by the Greens For Palestine group, the 'Zionism is Racism' motion calls for the party to declare itself 'anti-Zionist' and for the 'de-proscription of Palestine Action', but rejects accusations that anti-Zionism is anti-Semitic.
The motion also calls for a 'single democratic Palestinian state in all of historic Palestine, with Jerusalem as its capital' – effectively eradicating Israel.
A campaign poster for the motion depicts a map of the state of Israel painted in the colours of the Palestinian flag.
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The motion is supported by barrister Franck Magennis of Garden Court Chambers who said the motion backed the Palestinians right to an armed struggle 'that we should support'
Last year Mr Magennis (left) was filmed outside the Home Office as he helped deliver an application to try to get Hamas removed from the proscribed terror group list
Ms Speitan was previously a supporter of former Labour leader Jeremy Corbyn and was pictured with him in 2018
It is being proposed by Lubna Speitan, a British Palestinian artist, who told an online meeting to promote the motion this week that she had been 'heartened and overwhelmed' by the 'record-breaking' support it has received.
In an earlier speech in September 2025 Ms Speitan said: 'The only way forward for the liberation of any people is going to be by force, what was taken by force must be returned by force and this comes with military intervention, and for me I support our right to the armed struggle. We must never deny that...
'I will refuse to condemn the resistance of any repressed or occupied people because we have that right.
'Only we can claim self-defence, not the occupier.'
She added: 'The moment we rise, we call for resistance, [they say] 'you terrorist.'
It is supported by barrister Franck Magennis of Garden Court Chambers who last year was filmed outside the Home Office as he helped deliver an application to try to get Hamas removed from the proscribed terror group list.
In the online talk with Ms Speitan this week he said its wording would mean the Greens condoned armed resistance against Israel, adding that it was 'important to publicly proclaim support for the Palestinian strategy of armed struggle.' He also described Zionism as a 'fascist ideology'.
But John Mann, the government's independent adviser on antisemitism, said: 'It's a support for terrorism and overt racism against Jews. There is no ambiguity.
'It's from the extreme margins of politics.
'This is well beyond anything that happened during Labour under Jeremy Corbyn.
'This makes Corbyn look like a moderate.
'The crank element that even Corbyn was worried about has entered the Greens en mass.
'It's also about as far away as from Green politics of the past as is possible.
'Greens used to be about stopping fossil fuels and nuclear power and building wind farms.
'Now hate is bringing members surging into the Green party.'
A spokesperson for the Board of Deputies of British Jews warned the motion and campaign of support for it 'threatens to make the Green Party a hostile and discriminatory environment for its Jewish members, and has significant implications for British Jews more broadly.'
Israel's Deputy Foreign Minister Sharren Haskel told the Daily Mail: 'This Green Party motion is one of the hateful and racist documents I've ever read.
'It calls for the destruction of Israel and seeks to justify terrorism against Israel. Its intent is to justify the destruction of the Jewish homeland and deny the right of Jews to a national home.
'The double standards are extraordinary as they demand a national home for Palestinians but not Jews.
'I completely condemn this horrific document and hope the people of the UK see the Greens for what they are - a racist and hateful political party.'
The Mail revealed earlier this month that one Green member has taken the dramatic step of reporting their party to counter-terror police over the motion.
A Green Party spokesman stressed it was 'currently not policy' and only a 'proposed motion' which all members are able to submit. He said it would have to be successful in an ongoing prioritisation ballot before it could be voted on in the spring conference.
But the online campaign encouraging new members to join to support the motion provides detailed step-by-step guides on how to vote for the motion in the priority ballot and, if successful, to vote for it at the spring conference.
The Green spokesman declined to comment on reports that the motion is supported by the party's deputy leader Mr Ali.
In a video on TikTok on the day of the October 7attacks, Mr Ali claimed Israel would use the 'pretext of the fightback by Hamas fighters, or supposedly Hamas fighters' to attack Gaza.
The next day he said on Facebook that Hamas fighters were 'indigenous people defending themselves' and called for an end to 'white supremacist European settler colonialism'.
A spokesperson for Campaign Against Antisemitism added: 'The Green Party seems poised to recycle history's worst hatreds.
'Not only should this motion be refused consideration, but those who proposed it should be expelled from the Party.'
Ms Speitan did not respond to requests for comment.
