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AI has a reputation for amplifying hate. A new study finds it can weaken antisemitism, too.
(JTA) — Every day, it can seem, brings a fresh headline about how AI chatbots are spreading hateful ideas. But researchers tasked with understanding antisemitism and how it can be stopped say they have found evidence that AI chatbots can actually fight hate.
Researchers affiliated with the Anti-Defamation League’s Center for Antisemitism Research trained a large-language model, or LLM, on countering antisemitic conspiracy theories, then invited people who subscribed to at least one of those theories to interact with it.
The result, according to a study released on Wednesday: The users soon believed in the antisemitic theories less, while at the same time feeling more favorable about Jews as a group. And the effects were still strong a month later, even without further engagement with the LLM.
The researchers are hailing the finding as a breakthrough in the quest for identifying actionable strategies in the fight against Jew-hatred.
“What’s remarkable about these findings is that factual debunking works even for conspiracy theories with deep historical roots and strong connections to identity and prejudice,” David Rand, a Cornell University professor who was the study’s senior author, said in a statement.
“Our artificial intelligence debunker bot typically doesn’t rely on emotional appeals, empathy-building exercises, or anti-bias tactics to correct false beliefs,” Rand continued, referring to practices frequently employed by advocates seeking to fight antisemitism, including at the ADL. “It mostly provides accurate information and evidence-based counterarguments, demonstrating that facts still matter in changing minds.”
Matt Williams, who has headed the Center for Antisemitism Research since its founding three years ago, says the study builds on a growing body of research that views contemporary antisemitism as primarily a misinformation problem, rather than a civil rights problem.
“We need to think about antisemitism less like feelings about Jews, and more like feelings about Bigfoot,” he said in an interview. “And what I mean by that is, it’s not ‘Jews’ that are the problem. It is ‘the Jew’ as a function of conspiracy theory that is the problem. And the relationship between ‘Jews’ and ‘the Jew’ in that context is far more tenuous than we might want to think.”
Calling conspiracy theories “malfunctions in the ways that we make truth out of the world,” Williams said the study showed something remarkable. “People can correct those malfunctions,” he said. “They really can, which is super exciting and really impactful.”
The study emerges from the ADL’s relatively new effort to come-up with evidence-based ways to reduce antisemitism, working with dozens of researchers across a slew of institutions to design and carry out experiments aimed at turning a robust advocacy space into less of a guessing game.
The new experiment, conducted earlier this year, involved more than 1,200 people who said on a previous ADL survey that they believed at least one of six prominent antisemitic conspiracy theories, such as that Jews control the media or the “Great Replacement” theory about Jewish involvement in immigration.
The people then were randomly assigned three different scenarios: A third chatted with an LLM programmed by the researchers to debunk such theories, built within Microsoft’s Claude AI model; another third chatted with Claude about an unrelated topic; and the final third were simply told that their belief represented a “dangerous” conspiracy theory. Then they were all tested again about their beliefs.
Members of the group that chatted with what the researchers are calling DebunkBot were far more likely than members of the other groups to have their beliefs weakened, the researchers found.
DebunkBot was hardly a panacea for antisemitism: The study found that those who believed in more antisemitic conspiracy theories experienced less change. And Williams notes that the study found only that belief in antisemitic conspiracies was reduced, not rooted out entirely.
But he said any strategy that can cut against what researchers believe has been a widespread explosion of belief in conspiracy theories is a good thing.
The proportion of Americans subscribing to conspiracy theories over the last decade has reached as much as 45%, more than twice the rate that had held steady for 70 to 80 years, Williams said.
“To me, the increase in that level of saturation is far more concerning than any particular conspiracy theory moving through different generations,” he said. “I don’t think that we’re going to ever create a world in which we go under 15% — but going from 45 back to 30 or 25 seems more doable.”
The new study comes as AI models vault into widespread use among Americans, raising concerns about their implications for Jews. When Elon Musk launched a model of his own earlier this year called Grok, it immediately drew criticism for amplifying antisemitism — kicking off a pattern that has played out repeatedly. Soon, the company apologized and said it would train its model to avoid the same behavior in the future. Criticism of Grok is still widespread, but it no longer praises Hitler — though even this week it reportedly told one user that the Nazi gas chambers were not designed for mass killing, prompting an investigation by French authorities.
Chatbot training is seen as essential for delivering high-quality AI results. DebunkBot can be found online on its own website now, but Williams said efforts were underway within the ADL to convince the companies operating major AI platforms to incorporate its expertise.
“There’s far more receptivity than not, by any stretch of the imagination,” he said, while noting that the work was early and he could not share many details.
Whatever happens with that effort, Williams said, the new research demonstrates that combatting what’s sometimes called the world’s oldest hatred is possible.
“AI and LLMs — those are tools, right? And we can use tools for good and for evil,” Williams said. “But the fact that we can subject conspiracy theories to rational conversation and arguments and actually lead to favorable outcomes is itself, I think, relatively innovative, surprising and extraordinarily useful.”
The post AI has a reputation for amplifying hate. A new study finds it can weaken antisemitism, too. appeared first on The Forward.
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How a Persian Jewish immigrant became the rodeo king of California
David Halimi grew up Jewish in Tehran, watching Bonanza. He now produces rodeos in Northern California and owns a bar modeled on Cheers.
At 73, Halimi is known around Chico as the man behind a Western wear store stocked with thousands of cowboy boots, a rodeo circuit that draws bull riders from across the region, and a U-shaped bar where locals joke about who might be the town’s version of Norm. Less obvious — but no less central — is that he is also a longtime synagogue president, a Hillel board leader, and a professor who teaches business analytics at the local university.
Asked how an Iranian Jew learned the rhythms of the American West, Halimi doesn’t mystify it. “I’m a quick learner,” he said.
Halimi still follows events in Iran closely. “It’s heartbreaking,” he said. “It’s my heritage.” He has no illusions about the imbalance of power. “People protesting with their bare hands are no match to machine guns and professional assassins.” Still, he allows himself hope. “I wish and I pray that the people will prevail.”
For Halimi, the distance between Iran and Chico is not just geographic. It is the distance between a life shaped by instability — he grew up in Iran in the aftermath of a coup — and one he has spent decades deliberately building.
On a recent afternoon inside the 6,000-square-foot Diamond W Western Wear, Halimi wore what he sells — black alligator boots, jeans, a button-down, blazer and a hat — and moved easily past towers of boots, glass cases of belt buckles, pausing as an employee steamed a cowboy hat back into shape. His wife, Fran, emerged from the back. Customers drifted in.
Over the years, his footprint downtown has expanded to include two restaurants and a soon-to-open coffee shop, all within walking distance of his store.

Halimi didn’t arrive in America looking for a job. He arrived looking for an opportunity. When he moved to the United States at 16, in 1969, he worked full time while going to school, bussing tables at a restaurant and saving aggressively. By 18, he had pooled his earnings with his older brother to make his first real estate investment. “I was never looking for a job,” he said. “I always wanted to do my own thing.”
That instinct carried him through college, where he studied mathematics and economics, and later into commodities trading — “the stock market on steroids,” as he put it — before settling in Chico in 1979. It had the virtues he was looking for: a small-town feel, a university’s energy, and room to build.
Mending fences, building community
For all the boots, buckles and bull riders, Halimi’s most consequential work happens closer to home. He has served on the board of Congregation Beth Israel of Chico for decades, including numerous stints as president, and has been a steady presence through the cycles that define small Jewish communities.
Rabbi Lisa Rappaport, who leads the congregation, said that constancy matters. In a community with limited resources, leadership often means stepping in wherever the need arises.
That was especially true after the synagogue was targeted with antisemitic graffiti in late 2022. What followed, Rappaport recalled, was an outpouring of support. Donations funded a new security system. A local metalworker volunteered to create a new sign. Another family, moved by the response, offered to pay for a fence.
Halimi volunteered to design and help build it. Vertical bars, he insisted, would make the synagogue feel like a jail. Instead, he created diagonal metal panels inspired by math’s golden ratio, incorporating stainless-steel symbols of the Twelve Tribes — a boundary meant to protect without closing the place off.

Rappaport credits both Halimi and his wife, a former religious school director and longtime sisterhood leader, with helping sustain the shul. “They’re in it till the end,” she said. In a small community, she added, that kind of commitment is existential. “If you have a couple of people who have that frame of mind,” she said, “it keeps the community alive. It’s people like that that keep it pulsing.”
Halimi, now a grandfather, carries that same lesson into his classroom at Chico State, where he has been teaching since 2009. Each semester he leads two courses: business analytics and the evolution of management theory. He doesn’t think of it as a job so much as a responsibility. “I like seeing the light bulb go on,” he said. Former students, now entrepreneurs themselves, sometimes track him down to say thank you. The payoff, he said, is “psychic income.”
Halimi teaches what he learned: “Even when the odds are against you,” he said, “you can still succeed.”
His rodeo business began, improbably enough, as a marketing complaint. Halimi had been sponsoring country concerts and rodeos to promote the store, but he was unimpressed with the results. Other sponsors, he noticed, felt the same way. So he launched his own production company. First, they hosted country music concerts. Soon, they built a rodeo: the National Bullriding Championship Tour, which just marked its 30th year.
He had expected resistance from the industry. Instead, he found acceptance, and eventually respect. “It’s very unusual,” he acknowledged, “for an Iranian Jew to be a successful rodeo producer.”
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Argentina’s chief Sephardic rabbi reaffirms century-old ban on local conversions, sparking backlash
(JTA) — BUENOS AIRES — Argentina’s Sephardic chief rabbi reaffirmed a 100-year-old ruling that conversion may not be performed in Argentina and is considered valid only if carried out in Israel.
Representatives of non-Orthodox movements reacted angrily, asking why the ruling was issued now and saying it would essentially subject Argentinian converts to the tight hold that Israel’s Orthodox rabbis have on conversion.“Orthodoxy is attempting to present itself as the sole legitimate source of Judaism and halachic [Jewish legal] authority,” Rabbi Ariel Stofenmacher, the rector of the Seminario Rabínico Latinoamericano, the Masorti/Conservative movement’s seminary in Buenos Aires, told JTA. “We are concerned that members of the Jewish community in Latin America, where about 80 percent or more are not Orthodox, may read that statement by an important rabbi and feel confused.”
The document, issued on Jan. 13 and signed by Chief Rabbi Yosef Chehebar, reaffirms a takanah, or rabbinical ban, first established in Argentina in 1927. The authors of that ban, Rabbi Shaul Sitehon Dabah of the Syrian-Aleppo tradition and the Ashkenazi Rabbi Aharon Goldman, emerged in response to a proliferation of lax or irregular conversions, particularly in rural areas among Jewish immigrants.
The statement signed by Cheheber describes the ban as “general and binding.” It emphasizes that the decree was enacted permanently, “with no temporal limitation or expiration whatsoever,” and frames it as a safeguard for “the purity of lineage and the sanctity of our families.”
In the years since the original ban, however, non-Orthodox rabbis say the conversion process has been standardized, and that the level of preparation in Argentina is considered very high. The Masorti seminary, which has conducted conversions since its founding in 1994, argues that the reasons for the restriction “are no longer applicable.”
Critics of Cheheber’s document say there have been no recent incidents or developments that would have prompted such a reminder.
“We reject recent statements that invoke a cherem from the 1920s to invalidate conversions carried out outside the State of Israel and by non-Orthodox rabbis, as well as the use of language that appeals to notions of ‘lineage,’ ‘purity’ or ‘contamination,” the Seminario Rabínico Latinoamericano and its affiliated Rabbinical Seminary said in a statement Jan. 15. “Such claims are halachically unsustainable and ethically unacceptable, particularly when they introduce categories alien to Judaism and morally offensive.”
Rabbi Isaac Sacca, the Sephardi Chief Rabbi of Buenos Aires, posted Chehebar’s ruling on social media and defended it in an interview with JTA.
“The regulation represents a self-imposed limitation by Argentina’s Orthodox rabbis on their own authority, undertaken in order to ensure security and peace of mind that a practice as delicate and sacred as conversion is carried out with due seriousness, and that neither the convert, nor families, nor the community are misled,” he said.
Conversion has been a flashpoint between the diaspora and Israel, where the Orthodox rabbinate for decades held a near monopoly on Jewish lifecycle events, including conversion. Non-Orthodox conversions were recognized in Israel under a landmark ruling handed down by the Israeli Supreme Court in 2021, but non-Orthodox groups continue to object to government regulations that complicate the recognition of these conversions.
Conversion has been particularly fraught in Latin America, including the controversies that led to the 1927 takanah and, more recently, the mass conversion in Brazil, Colombia and other countries of people who identify as Bnei Anusim — descendants of Jews forcibly converted during the Spanish and Portuguese Inquisitions.
Within Orthodox circles in Argentina, preparatory stages for conversion may take place in the country, but the bet din, or rabbinical court, that validates them operates in Israel. According to sources who asked to remain anonymous, the target of the latest ruling was not the non-Orthodox movements but Orthodox rabbis who had been offering more flexible alternatives to prospective converts, such as completing an Orthodox conversion in neighboring Uruguay and then returning to Argentina to seek its recognition in Buenos Aires.
Chehebar’s recent statement specifies that the takanah “applies both to any person residing in Argentina, as well as to anyone coming from another country with the intention of establishing residence in national territory, even in cases in which the giyur [convert] has already been carried out in their country of origin or another country, outside of Eretz Israel.”
Asked whether any specific incident had triggered the statement, Sacca replied: “We are not aware of any particular event. It is simply a reminder that the Sephardic Chief Rabbinate of Syrian-Aleppo tradition has conveyed to our rabbinate for public dissemination.”
The ruling “does not constitute a rejection of the convert, nor does it devalue those who sincerely seek to join Judaism,” he added. “On the contrary, it functions as a halakhic safeguard designed to preserve a core commandment linked to Jewish identity, in a context marked by social pressures and institutional weaknesses. It also seeks to prevent hasty decisions that could affect the spiritual and personal lives of those seeking conversion, as well as those of their descendants.”
The Masorti movement insisted that its own rabbis conduct the conversion process in a manner that is “serious, demanding, and deeply Jewish,” based on rigorous study, commitment to Jewish life and responsible rabbinical guidance. “Those who join the Jewish people through this path,” the statement affirms, “are received as full Jews, with dignity and complete belonging, in accordance with rabbinic tradition.”
Said Stofenmacher: “We reaffirm that we conduct legitimate conversions in accordance with the halacha, as we have done for decades, with thousands of individuals who have joined the Jewish people in our region, and we will continue to do so in all the communities where our rabbis serve.”
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French Jewish Community Marks 20 Years Since Ilan Halimi’s Brutal Murder
A crowd gathers at the Jardin Ilan Halimi in Paris on Feb. 14, 2021, to commemorate the 15th anniversary of Halimi’s kidnapping and murder. Photo: Reuters/Xose Bouzas/Hans Lucas
France’s Jewish community on Tuesday commemorated the 20th anniversary of the death of Ilan Halimi, a young Jewish man who was brutally tortured to death, as his memory continues to be defaced amid a rising tide of antisemitism threatening Jews and Israelis across the country.
“Twenty years on, Ilan Halimi’s memory still needs to be protected and honored, yet it continues to come under attack, as recent vandalism at his memorial site shows,” the Representative Council of Jewish Institutions of France (CRIF) — the main representative body of French Jews — wrote in a post on X.
“Antisemitism remains a persistent threat in France today,” the statement read.
Le 20 janvier 2006 marque l’enlèvement et le début de la séquestration d’Ilan Halimi, 23 ans, parce qu’il était Juif.
20 ans plus tard, alors que la mémoire d’Ilan Halimi doit être protégée et honorée, elle continue d’être atteinte, comme l’ont montré les récents actes de… pic.twitter.com/Htu9ntMHhq
— CRIF (@Le_CRIF) January 20, 2026
Last week, another olive tree planted to honor Halimi’s memory was vandalized and cut down, as French authorities continue efforts to replant trees in remembrance of the young Jewish man who was murdered in 2006.
“We will bring those responsible to justice,” French Interior Minister Laurent Nunez wrote in a post on X. “Our collective outrage is matched only by our unwavering determination to combat antisemitic and anti-religious acts that continue to tarnish the memory of an innocent man.”
This latest antisemitic act came after a plaque honoring Halimi was vandalized in Cagnes-sur-Mer, a town in southeastern France, prompting local authorities to open an investigation for “destruction and antisemitic damage.”
According to local reports, a 29-year-old man with no prior criminal record has been arrested. While he admitted to the acts, he denied any antisemitic motive and is now awaiting trial.
Last year, a tree planted in memory of Halimi was also vandalized and cut down in Épinay-sur-Seine, a suburb north of Paris.
Two Tunisian twin brothers were arrested and convicted for cutting down the tree, but were acquitted of the antisemitism charges brought against them.
Both of them were sentenced to eight months in prison, but one of them received a suspended sentence, meaning he will not serve time unless he commits another offense or violates certain conditions.
According to local media, one of the brothers has reportedly been deported from France.
Halimi was abducted, held captive, and tortured in January 2006 by a gang of about 20 people in a low-income housing estate in the Paris suburb of Bagneux.
Three weeks later, Halimi was found in Essonne, south of Paris, naked, gagged, and handcuffed, with clear signs of torture and burns. The 23-year-old died on the way to the hospital.
In 2011, French authorities planted the first olive tree in Halimi’s memory. However, the young Jewish boy’s memory has faced attacks before, with two other trees planted in his honor vandalized in 2019 in Essonne, where he was found dying near a railway track.
