Zack Polanski has been accused of endorsing antizionist conspiracy theories after he was found to have “liked” posts suggesting Sir Keir Starmer was on the payroll of pro-Israel interest groups.
In his activity on the Bluesky social media platform over the past six months, the Green leader also approved of messages suggesting that the prime minister was receiving money from “Zionist philanthropists” and asking how much Israel was allegedly paying him.
In their response to the Telegraph over the posts, a Green Party spokesperson said Polanski “makes no apology” for the endorsements.
One post from November 2025 endorsed by Polanski stated that Starmer “and his corrupt Cabinet receive large sums of money from Zionist ‘philanthropists’ and private healthcare who, apparently, don’t expect anything in return…”
Last month, he liked another post which questioned “How much does Israel pay [Starmer]?”
A day earlier, Polanski liked a post that seemed to suggest Labour was being paid by Israel or Jewish people.
It read: “The ‘Labour Friends of Israel’ and their paymasters seem rattled. Starmer has to go, everyone knows it, he is just clutching at desperate straws to delay the inevitable.”
The controversy comes as the party faces broader scrutiny over allegations of antisemitism linked to several of its candidates ahead of local elections on May 7.
Green Party candidates have been found to have referred to Jewish people as “cockroaches”, spread conspiracy theories about the October 7 attacks, called for “every single Zionist” to be killed, and referred to Zionism as “the Nazism of our time”.
Polanski himself, who is Jewish, has said he himself has been the victim of antisemitic abuse, including last week on the campaign trail in Hastings, where he claimed that Reform UK activists made a Nazi salute in his direction.
And, earlier this week, he condemned what he termed a “pretty vile antisemitic caricature” of himself, published by The Times. The newspaper featured a cartoon of Polanski kicking police officers who were attempting to arrest Essa Suleiman, the 45-year-old Somali-born British national who last week was charged with three counts of attempted murder following the Golders Green stabbing attack.
The Green Party formally complained to the paper over the caricature, which it said displays “tropes so clearly associated with antisemitic depictions of Jewish people”. The paper has yet to formally respond, according to Polanski on Sunday.
In a statement, Labour Friends of Israel accused Polanski of amplifying harmful conspiracy theories and of spending “weeks defending the indefensible”.
“The Greens have offered their full-throated backing to a string of antisemitic candidates. Now Polanski is endorsing these grim conspiracy theories online. He should be utterly ashamed. It shows he is simply not fit for high office,” the group said.
According to data from this week conducted by the group More in Common, Polanski’s leadership approval rating has dropped 14 points over the last week, leaving him above the prime minister but below Kemi Badenoch, Nigel Farage, and Sir Ed Davey.
A Green Party spokesperson said: “Zack makes no apology for highlighting the close relationship between Israel and the Labour Government, which has led to Labour and Keir Starmer arming and supporting a genocide, a bit more of an issue than liking some social media posts.”
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