Antisemitism Within the International Socialist Tendency: Ideology, Rhetoric, and Pattern



A Structured Analysis for Research Purposes

Date: April 10, 2026 Sources: ADL, INSS, Jewish Virtual Library (all linked inline) Disclaimer: This blog documents patterns identified by scholars and monitoring organizations. It distinguishes between legitimate political criticism and antisemitic rhetoric. 

1. Introduction: Why the IST Is Relevant to This Analysis

The International Socialist Tendency (IST) — a loose global grouping of Trotskyist parties anchored by the British Socialist Workers Party (SWP) — presents a distinctive case in the study of left-wing antisemitism. Unlike overt far-right Jew-hatred, antisemitism within IST-affiliated spaces tends to operate through ideological frameworks: anti-Zionism, anti-imperialism, and anti-capitalism. Researchers at institutions including the ADL and the Israeli Institute for National Security Studies (INSS) have documented how these frameworks can slide from political critique into antisemitic territory.

This blog maps the key antisemitic theories, tropes, and rhetorical patterns associated with the IST and its sister organizations, citing specific texts.

2. The Trotskyist Anti-Zionist Inheritance

The IST's anti-Zionism is not incidental — it is doctrinal. Trotskyist groups, including the IST's predecessor tradition, have opposed Jewish statehood since the founding of Israel in 1948.

The INSS documents a formative moment in this tradition:

"Although at times the always minuscule Trotskyite movement criticized antisemitic policies in the Soviet bloc and in the United States, in 1946 they published one of the most pernicious antisemitic tracts the left has ever produced: Abram Leon's The Jewish Question: A Marxist Interpretation. Leon went beyond previous Marxist writers in declaring that medieval prohibitions against Jews owning land or working as artisans were 'a fable.' He claimed that Jews were psychologically drawn to moneylending."

— Left-Wing Antisemitism in the United States: Past and Present, INSS (link) [center]

The same INSS report documents the broader Trotskyist tradition:

"The Trotskyites denounced the struggle for a Jewish state as 'criminal' and 'imperialist' and opposed Israel in every war. They trivialized the Holocaust by equating it with the Allied bombing of Germany during World War II, vastly inflating the casualties of the air attacks. They depicted the German masses as victims of the Nazis, rather than as their supporters, ignoring their role in the antisemitic atrocities."

— Left-Wing Antisemitism in the United States: Past and Present, INSS (link) [center]

The IST inherits this tradition. Its founding ideologue Tony Cliff (born Ygael Gluckstein) himself rejected Zionism, and IST parties have consistently framed Israel as an illegitimate, settler-colonial state — a position that academic researchers note can shade into antisemitism when it involves denying Jewish peoplehood and self-determination entirely.

3. Anti-Zionism as Cultural Code: The Post-1967 Shift

The INSS's overview of contemporary antisemitism explains how anti-Zionism became the primary vehicle for left-wing antisemitic expression:

"Anti-Zionism as a 'cultural code' in the anti-Zionist discourse of the 'new left' emerged after 1967 following Israel's victory in the Six-Day War... the main elements of this code were anti-colonialism, anti-capitalism, deep suspicion of anything identified with US policy... 'a specific form of an anti-Jewish stance was created in order to serve as a symbol — a sign of belonging.'"

"Many people use 'the State of Israel' as a substitute for the word 'Jews' because they realize that since the Holocaust, antisemitic statements are no longer acceptable in Western countries... Hiding behind ostensibly anti-Zionist claims is much safer, thereby 'distancing themselves from the embarrassing connection with the old type of hatred for Jews.'"

— An Overview of Contemporary Antisemitism, INSS (link) [center]

IST organizations, including the SWP (UK), Socialist Alternative (Australia), and People Before Profit (Ireland), routinely frame Israel not merely as a state with objectionable policies but as a fundamentally illegitimate entity. Academic researchers identify this totalizing delegitimization — the denial of Israel's right to exist in any form — as crossing from political critique into antisemitic territory.

4. The "Zionist Lobby" Conspiracy Theory

One of the most clearly documented antisemitic tropes in IST-adjacent spaces is the concept of an all-powerful, conspiratorial "Zionist lobby" pulling the strings of Western governments and media.

The ADL's European report documents this directly:

"The idea of an all-powerful Israeli or Zionist lobby is one that has found swathes of appeal among the British left. It is common for British Jewish organisations or institutions to be referred to as a 'pro-Israel lobby group.' By using such a term as a preface to a UK Jewish organisation, the implication is being made that those Jews hold dual loyalty or are working against the interests of their own country."

"It's on Iranian state broadcaster, Press TV, where former Bristol University professor David Miller and former Labour Member of Parliament Chris Williamson respectively produce and present a series called 'Palestine Declassified' almost entirely devoted to trying to prove that British Jewish organisations have a Zionist or Israeli affiliation, thereby (it is claimed) doing the nefarious bidding of the Israeli state."

— Antisemitism and Radical Anti-Israel Bias on the Political Left in Europe, ADL (link) [center]

This "Zionist lobby" framing — which echoes the structure of classic conspiracy theories including The Protocols of the Elders of Zion — circulates widely in SWP publications, protest rhetoric, and the broader IST ecosystem. The ADL's knowledge base traces its genealogy:

"Before Stephen Walt and John Mearsheimer lent their academic credentials to a widely discredited 2007 book, The Israel Lobby and U.S. Foreign Policy, alleging an 'Israel Lobby' that controls American foreign policy to the detriment of the U.S., conspiracy theories of this sort dwelt mostly within the fringe domain of white supremacists, neo-Nazis, anti-Semites, and their ilk. These type of conspiracy theories evoked the notorious 1903 fraud, The Protocols of the Learned Elders of Zion, purporting to document a nefarious Jewish plot for global domination."

— ADL Knowledge Base (link)

5. The "Livingstone Formulation": Silencing Criticism of Antisemitism

A key rhetorical device in IST-adjacent spaces is what British sociologist David Hirsh has named "The Livingstone Formulation": the claim that any accusation of antisemitism is itself a bad-faith smear designed to protect Israel from criticism. This device is specifically documented by the ADL:

"During the Corbyn years, the idea took hold that antisemitism was being used as a weapon to attack the Labour Party to impact its electoral success. This reinforced the long-standing belief on parts of the anti-Zionist left that false allegations of antisemitism are used to deflect criticisms of Israel (a phenomenon labelled 'The Livingstone Formulation' by British sociologist David Hirsh)."

"Such reasoning has ensured that when antisemitism rears its head in left wing spaces, the person pointing it out is often seen as working on behalf of Israel rather than expressing genuine concerns. The EHRC addressed this in their report looking into antisemitism in the Labour Party and asserted that 'suggesting that complaints of antisemitism were fake or smears' constituted 'antisemitic conduct.'"

— Antisemitism and Radical Anti-Israel Bias on the Political Left in Europe, ADL (link) [center]

This formulation is structurally important: it creates an epistemic closed loop in which antisemitism cannot be identified or challenged from inside IST-aligned political spaces, because any attempt to do so is framed as Zionist interference.

6. The SWP and Its Orbit: Jeremy Corbyn and the British Left

The SWP — the IST's anchor organization — operated for decades in a political milieu with Jeremy Corbyn's Labour left. The cross-pollination between the SWP and Corbynism produced documented antisemitism incidents. The ADL's report on European antisemitism documents Corbyn's record:

"Far-left parties often claim to be in a vanguard of the fight against racism, but sometimes tolerate antisemitic views not just for ideological reasons but for political reasons — to broaden their support even at the expense of allowing bigots within their party. While racism should be anathema on the left, antisemitism appears in the guise of criticism of Israel, anti-Zionism and anti-capitalism, where the latter invokes stereotypes of Jews and money, often as rapacious global bankers, like in the Freedom for Humanity mural, for which UK Labour party leader Jeremy Corbyn expressed approval."

"In 2009, Corbyn publicly stated that it was his pleasure and honor to host an event in parliament where 'our friends from Hezbollah will be speaking' and that he had 'also invited our friends from Hamas to come and speak as well.'"

"In 2011, during an appearance on Iranian propaganda network Press TV, Corbyn accused British state broadcaster BBC of having 'a bias towards saying that Israel is a democracy in the Middle East, Israel has a right to exist, Israel has its security concerns.'"

— Choosing Antisemitism: Instrumentalization and Tolerance of Antisemitism in Contemporary European Politics, ADL (link) [center]

The SWP's own newspaper Socialist Worker consistently ran coverage framing Israel as a Nazi-equivalent state — a comparison researchers identify as a classic antisemitic inversion designed to strip Jews of victim status and weaponize the Holocaust against them.

Perhaps no single document captures the IST's crossing of the line from political critique into antisemitic territory more starkly than the headline published by the Socialist Workers Party's official organ, Socialist Worker (UK), on October 9, 2023 — the morning after Hamas's massacre of approximately 1,200 Israeli civilians:

"Rejoice as Palestinian resistance humiliates racist Israel" — Socialist Worker, October 9, 2023 (link)

The SWP is the anchor organization of the International Socialist Tendency and its longest-running affiliated publication. This headline was not published by a fringe member or rogue branch — it appeared on the official party website, representing the IST's flagship organization's institutional voice in the immediate aftermath of the deadliest single-day massacre of Jewish people since the Holocaust.

Several elements of the headline are analytically significant:

1. The instruction to "rejoice" The directive to celebrate — not merely analyze or contextualize — the events of October 7 reflects the same structural logic documented throughout this blog: that violence against Israelis (and by extension Jewish civilians) is not only justifiable but cause for joy. This mirrors the PSL's simultaneous statements calling the attacks "a morally and legally legitimate response to occupation."

2. The framing of slaughter as "humiliation" By framing the massacre of civilians through the lens of humiliation and honor — Israel being "humiliated" — the SWP deploys a framework in which Jewish death is rendered as a geopolitical score, stripping Jewish victims of their humanity.

3. The totalizing label "racist Israel" By defining Israel as simply and wholly "racist," the SWP forecloses the possibility of any Israeli civilian being an innocent victim. This is the rhetorical mechanism the INSS describes as "Israel denial" — the removal of Israel's moral legitimacy as a precondition for endorsing violence against its population.

This headline stands as perhaps the most direct primary-source illustration of the antisemitic trajectory documented throughout this blog. It demonstrates that for the IST's leading organization, the theoretical frameworks of anti-Zionism, anti-imperialism, and anti-racism did not merely coexist with antisemitic outcomes — they produced them, in real time, in response to mass murder.


The French IST-affiliated figure Jean-Luc Mélenchon (leader of La France Insoumise, which has formal ties to IST-aligned parties) exhibits similar patterns:

"In 2018 he claimed that criticism of Britain's far-left leader Jeremy Corbyn came from 'so-called Jews' and was orchestrated by Israeli Prime Minister Benyamin Netanyahu. The following year, he wrote that 'Corbyn had to endure without help the crude accusation of antisemitism from the Chief Rabbi of England and the various Likud networks of influence. Instead of fighting back, he spent his time apologizing and giving pledges. (...) I will never give in to it for my part.'"

— Antisemitism and Radical Anti-Israel Bias on the Political Left in Europe, ADL (link) [center]

7. IST-Affiliated Groups and Hamas Solidarity Post-October 7

Following Hamas's October 7, 2023 attacks on Israel — which killed approximately 1,200 people, including civilians — several IST-aligned organizations issued statements that either celebrated or justified the massacres. While not all IST affiliates took this position, the PSL (Party for Socialism and Liberation — a US group within the broader IST ecosystem) was documented doing so by the ADL:

"The PSL published a statement on October 7 expressing strong support for Hamas's actions: 'Resistance to apartheid and fascist-type oppression is not a crime! It is the inevitable outcome for all people who demand self-determination rather than living with the boot-heel of the oppressors on their necks…The actions of the resistance over the course of the last day is a morally and legally legitimate response to occupation.'" 

"A PSL speaker at an October 8 protest in New York declared that 'resistance is not terrorism' and endorsed resistance against 'the Zionist entity…by any means necessary.'"

"At an October 8 protest in Anaheim, CA, co-sponsored by PSL, a speaker celebrated this 'moment where Hamas is taking control, they're resisting,' and at a rally in San Francisco a speaker declared, 'The resistance is liberating land from '48 that has been occupied for 75 years.'"

— Fringe-Left Groups Express Support for Hamas's Invasion and Brutal Attacks in Israel, ADL (link) [center]

This endorsement of violence against Israeli Jews — irrespective of civilian status — is documented by the INSS as part of the broader "red-green alliance" phenomenon:

"On many campuses, leftist groups have forged a 'Red-Green' alliance with Muslim students — many of them reactionaries — to demonize Israel, often using antisemitic imagery and invective."

— An Overview of Contemporary Antisemitism, INSS (link) [center]

8. Anti-Capitalism Collapsing Into Antisemitism

A recurring structural problem within IST ideology is the tendency of Marxist anti-capitalism to absorb antisemitic imagery — the figure of the Jewish banker or global financial manipulator. This is not unique to the IST, but its intense focus on capitalism as the supreme evil creates ongoing susceptibility:

"Antisemitism appears in the guise of criticism of Israel, anti-Zionism and anti-capitalism, where the latter invokes stereotypes of Jews and money, often as rapacious global bankers."

— Choosing Antisemitism, ADL (link) [center]

In Germany, IST-adjacent progressive circles have been documented pushing this further:

"Among left-leaning political circles in Germany, it is common to hear that Israel is the mastermind behind various conspiratorial actions. Also, there are attempts to compare Israel directly with National Socialism to reverse the state's role from victim to perpetrator, thereby exonerating those guilty of antisemitism."

— Antisemitism and Radical Anti-Israel Bias on the Political Left in Europe, ADL (link) [center]

9. Israel-Nazi Comparisons: Inverting the Holocaust

One of the most potent antisemitic rhetorical tools in IST spaces is the systematic comparison of Israel to Nazi Germany. The INSS identifies this as a mechanism for laundering antisemitism through political language:

"Comparisons between Israel and Nazi Germany or the apartheid regime in South Africa are ways of expressing this antisemitism in the framework of the anti-Zionist discourse... antisemitism — vicious hatred of Jews — conceals itself behind many of the arguments ostensibly referring to Israel."

— An Overview of Contemporary Antisemitism, INSS (link) [center]

SWP publications and IST-affiliated protest materials have repeatedly deployed this comparison. It serves a dual function: it morally delegitimizes Israel while simultaneously diminishing the Holocaust — stripping Jews of their historical victimhood and identity as a persecuted people.

10. Structural Summary: The Five Core Antisemitic Theories in IST Spaces

# Theory Mechanism Antisemitic Function
1 Anti-Zionism as total negation Israel has no right to exist in any form Denies Jewish self-determination uniquely
2 Zionist lobby conspiracy Jews/Zionists control governments, media Echoes Protocols structure; imputes dual loyalty
3 Livingstone Formulation Antisemitism accusations are Israeli smears Shields antisemitism from accountability
4 Hamas solidarity October 7 violence framed as "resistance" Endorses killing of Jews as politically legitimate
5 Israel = Nazi Germany Holocaust inversion Erases Jewish victimhood; weaponizes genocide against Jews

11. Conclusion

The antisemitism documented in and around the IST is not predominantly the product of conscious racial hatred. Rather, it emerges from the structural interaction of three ideological commitments — anti-Zionism, anti-imperialism, and anti-capitalism — with classic antisemitic tropes about Jewish power, dual loyalty, and financial manipulation. The IST's organizational culture, with its emphasis on internal discipline and dismissal of external criticism as "bourgeois" or "Zionist," has made these patterns persistently difficult to challenge from within.

Academic and monitoring organizations including the ADL and INSS consistently identify these patterns across IST affiliates in Britain, the United States, France, Australia, and beyond. The October 7 moment crystallized how far some of these tendencies had traveled from political critique into something more troubling.

Key Source Documents

Source Organization Link Bias Label
Antisemitism and Radical Anti-Israel Bias on the Political Left in Europe ADL link center
Choosing Antisemitism: Instrumentalization and Tolerance of Antisemitism in Contemporary European Politics ADL link center
An Overview of Contemporary Antisemitism INSS link center
Left-Wing Antisemitism in the United States: Past and Present INSS link center
Fringe-Left Groups Express Support for Hamas's Invasion and Brutal Attacks in Israel ADL link center

























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