UK Green Party Adopts Motion Labeling Zionism a Form of Racism as Israel Bars Leader Zack Polanski

The Green Party of the United Kingdom has formally adopted a position describing Zionism as a form of racism, a move that immediately drew a sharp response from Israel and thrust the party's leadership into an international controversy. The decision was reached through a vote of party members, according to Al Jazeera, and represents one of the most significant breaks with mainstream British political consensus on Israel and Palestine by a national party in recent years.

The resolution's passage was followed almost immediately by an Israeli government decision to ban Zack Polanski, the Jewish leader of the UK Green Party, from entering the country. The ban marks a rare instance in which Israel has barred the head of a sitting European political party, and it escalated what had been a domestic party debate into a diplomatic flashpoint.

Zionism, the movement advocating for a Jewish homeland in the territory of historic Palestine, has been the subject of contested definitions for decades. Critics of the new Green Party motion argue that equating Zionism with racism conflates a national liberation ideology with prejudice against a people, and that such language can veer into antisemitism. Supporters of the motion contend that the term describes a political ideology and a system of dispossession rather than a religious or ethnic identity, and that criticism of it is a legitimate political act, not a form of bigotry.

The Green Party's decision places it at odds with the official positions of the UK's other major parties, all of which have historically avoided formally classifying Zionism as racism. It also sets the party apart from the definition of antisemitism endorsed by the International Holocaust Remembrance Alliance, which includes certain forms of anti-Zionist rhetoric among its examples of antisemitic expression — a definition that has been adopted by the British government and by several other countries.

Israel's reaction was swift and severe. By barring Polanski from entering the country, Israeli authorities signaled that they regard the party's new position as beyond the pale of acceptable political discourse. The ban effectively makes Polanski, who is Jewish, persona non grata in the state that defines itself as the national homeland of the Jewish people — a paradox that supporters of the Green Party motion are likely to seize upon as evidence of the very conflation they reject.

Polanski's identity as a Jewish leader of a party that has now formally classified Zionism as racism adds a layer of complexity to the dispute. Jewish opinion on Zionism and on Israel's policies has never been monolithic, and a range of Jewish voices — including within the UK — have criticized Israeli government actions while affirming their own relationship to Jewish identity and, in some cases, to Zionism itself. The Green Party's motion is likely to intensify an ongoing debate within British Jewry about how criticism of Israel should be articulated and where the line between political criticism and antisemitism lies.

The vote also reflects broader shifts within the UK left. In recent years, grassroots pressure within parties including Labour, the Liberal Democrats and the Greens has pushed toward more explicit criticism of Israeli policy. The Green Party, which has historically positioned itself as a movement driven by member-led decision-making, has been particularly susceptible to such grassroots motions, and its conference votes have on occasion set it apart from the Westminster mainstream.

The timing of the vote places it within a wider international context of heightened scrutiny of Israel's conduct. The source material published alongside the Green Party story references coverage of abuse allegations in Israeli prisons, criticism of an Israeli death penalty law, and questions about whether the Trump administration holds real leverage over Prime Minister Benjamin Netanyahu. While those items are separate news stories, they illustrate the charged environment in which the Green Party's motion landed.

Israel's ban on Polanski may also have practical consequences beyond symbolism. As a party leader, Polanski would ordinarily engage in international travel and meetings with counterparts abroad. A ban could complicate such engagement, and it could invite reciprocal measures or diplomatic protests from the UK government, which has not yet indicated whether it will respond formally.

For the Green Party itself, the motion raises questions about electoral consequences. The party has made significant gains in recent local and national contests, partly by attracting voters disillusioned with the two main parties. Whether the Zionism motion will cost it support among Jewish voters or moderate voters more broadly, or energize its activist base, is an open question that will be tested at the next general election.

Legal experts have noted that the classification of Zionism as racism is a political statement rather than a legal determination, and its adoption by a party does not change UK law. However, such motions can influence public discourse, shape institutional policies and inform how parties select candidates and formulate foreign policy positions.

The Israeli ban on Polanski is also likely to be challenged by free-speech advocates, who may argue that barring a foreign political leader for the positions of his party sets a troubling precedent. Conversely, supporters of the ban may argue that Israel has the sovereign right to deny entry to individuals whose views it considers hostile to its existence.

At the international level, the episode adds another point of friction between Israel and European political movements at a time when relations are already strained over the war in Gaza and related crises. European governments have taken divergent approaches: some have moved toward recognizing Palestinian statehood, while others have cracked down on pro-Palestinian activism and adopted the IHRA definition of antisemitism into law or policy.

The Green Party's motion is unlikely to be the final word on the subject. Similar debates are underway in other parties and civil society organizations, and the language used to describe Zionism, anti-Zionism and antisemitism remains deeply contested. What is clear is that the vote has transformed a long-running argument within the British left into a matter of international diplomacy, with a party leader now barred from the country at the center of the dispute.