By: Fern Sidman

A dramatic escalation in the conflict between the United States, Israel, and Iran has reverberated far beyond the battlefields of the Middle East, triggering a disturbing rise in antisemitic incidents across the globe, according to new findings from the Combat Antisemitism Movement (CAM). As Washington and Jerusalem launched a joint military operation targeting the Iranian regime—long accused of sponsoring terrorism and propagating virulent antisemitic ideology—researchers have documented a surge in rhetoric and violence directed at Jews and Israelis in cities spanning North America and Europe.

The campaign against Iran began earlier this week with a coordinated series of strikes aimed at crippling the infrastructure of the Islamic Republic’s ruling establishment. The opening phase of the operation included an Israeli airstrike that killed Iran’s Supreme Leader, Ayatollah Ali Khamenei, who had governed the country for decades and presided over an aggressive foreign policy that invested billions of dollars in terrorist proxies and weapons development. The regime under Khamenei repeatedly declared its intention to eradicate Israel, while providing financial and logistical support to groups such as Hezbollah, Hamas, the Houthis in Yemen and other terrorist organizations across the Middle East.

Officials and analysts have described the military campaign as a turning point in the longstanding confrontation between Iran and the Western alliance led by the United States. Supporters of the operation argue that Tehran’s leadership had long operated with relative impunity, exporting violence throughout the region while pursuing nuclear capabilities that posed an existential threat to Israel.

“The era of impunity is now over,” said Sacha Roytman, chief executive officer of the Combat Antisemitism Movement. Roytman expressed hope that the military intervention might mark the beginning of a new chapter for both Iran and the broader Middle East. “We hope a new era, of freedom in Iran and stability and peace across the Middle East, is just around the corner,” he said, adding his organization’s gratitude to President Donald Trump and Israeli Prime Minister Benjamin Netanyahu for what he described as decisive leadership in confronting the Iranian regime.

Yet the geopolitical upheaval has also unleashed a wave of extremist rhetoric and antisemitic activity in the West. According to CAM’s Antisemitism Research Center (ARC), the outbreak of hostilities has coincided with a sharp increase in incidents targeting Jewish communities and institutions. Researchers monitoring global developments recorded a 34 percent rise in antisemitic events during the past week alone.

The ARC’s weekly Global Antisemitism Report documented 154 separate incidents worldwide during that period. Of those cases, nearly half—73 incidents—were directly linked to the war with Iran. Investigators concluded that perpetrators were motivated either by ideological support for the Iranian regime or by conspiratorial narratives portraying Jews and Israel as responsible for the conflict.

These incidents ranged from inflammatory public demonstrations to acts of vandalism, violent rhetoric, and deadly attacks. In several instances, extremist figures used their public platforms to propagate conspiracy theories that blamed Jews or Israeli institutions for provoking the war.

Among those cited in the report were prominent far-right media personalities who circulated allegations that Israel had orchestrated so-called “false flag” attacks to manipulate the United States into military confrontation with Iran. Other commentators invoked conspiratorial accusations against Jewish religious organizations, fueling narratives that have historically served as catalysts for antisemitic hostility.

The ARC report also documented disturbing public displays of incitement. In Washington, D.C., activists erected a graphic installation depicting Israeli Prime Minister Benjamin Netanyahu and President Donald Trump consuming the organs of children—imagery that researchers said echoed centuries-old antisemitic blood libel tropes.

Meanwhile, radical political organizations in New York City issued statements praising Iran’s missile attacks against Israel, describing them as acts of resistance against “Zionist forces and settlers.” Such rhetoric, researchers warned, risks normalizing violence against Israeli civilians while reinforcing extremist narratives that demonize Jews collectively.

Across the Atlantic, similar expressions of hostility emerged in European capitals. Demonstrators in London waved flags of the Islamic Republic and chanted slogans calling for the destruction of Israel. Participants in the protest shouted “Burn, burn Tel Aviv,” a chant that observers said illustrated the extent to which geopolitical conflict can rapidly spill into public incitement.

The surge in antisemitic rhetoric has also coincided with acts of violence. One of the most shocking incidents occurred in Austin, Texas, where a gunman opened fire inside a bar, killing three people before being fatally shot by police. Authorities later revealed that the attacker had worn clothing bearing the words “Property of Allah” along with imagery resembling the Iranian flag. Investigators also discovered a history of antisemitic posts on the suspect’s social media accounts.

Analysts examining the attack believe it illustrates the dangerous intersection between extremist ideology and geopolitical conflict. When international crises become framed through conspiratorial narratives blaming Jews or Israel, such rhetoric can embolden individuals already predisposed to violence.

Other incidents recorded by the ARC reflect the global scope of the problem. In the United Kingdom, an anti-Israel activist vandalized a statue of former British Prime Minister Winston Churchill in London’s Parliament Square. The graffiti included the slogan “Globalize the Intifada” along with accusations labeling Churchill a “Zionist war criminal.”

In Canada, gunfire struck Temple Emanu-El in Toronto’s North York district shortly after the congregation concluded a Purim celebration. Although no one was injured in the attack, the shooting heightened concerns about the safety of Jewish institutions amid rising tensions.

France witnessed another disturbing episode when vandals left a pig’s head and an antisemitic poster outside the home of Christian Estrosi, the mayor of Nice. The poster depicted a Star of David accompanied by an antisemitic slur and appeared intended to intimidate Estrosi’s family, particularly because his wife is Jewish.

Experts studying antisemitism say such incidents illustrate how global conflicts often become catalysts for hostility toward Jewish communities far removed from the battlefield. Throughout modern history, political crises involving Israel have frequently triggered spikes in antisemitic rhetoric and violence in other countries.

Researchers emphasize that the current surge appears particularly alarming because it is occurring simultaneously across multiple ideological spectrums. Far-right extremists, radical left-wing activists, and Islamist sympathizers have all contributed to the spread of antisemitic narratives, even though their broader political agendas differ dramatically.

According to CAM’s analysis, the convergence of these ideologies creates a volatile environment in which antisemitic conspiracies can circulate widely through social media and public demonstrations. When such narratives are amplified by influential figures, they can rapidly gain traction among individuals predisposed to hostility toward Jews.

Roytman warned that this phenomenon highlights the need for vigilance and coordinated action among governments, law enforcement agencies, and civil society organizations.

“The Iranian regime has spent decades exporting antisemitism as part of its ideological warfare,” he said. “When conflict erupts, that propaganda resonates with extremist movements around the world.”

The challenge facing policymakers is not merely military or diplomatic but also cultural and informational. While the conflict with Iran may reshape the strategic landscape of the Middle East, its repercussions are already being felt in communities thousands of miles away.

Jewish leaders and advocacy organizations have called for stronger measures to protect synagogues, schools, and community centers as tensions continue to rise. Many argue that governments must take a more proactive approach to confronting incitement and preventing extremist rhetoric from escalating into violence.

At the same time, researchers caution that the global spread of antisemitism cannot be addressed solely through security measures. Combating the phenomenon also requires sustained efforts to challenge conspiracy theories, educate the public about the dangers of hate speech, and promote dialogue across ideological divides.

As the military confrontation between the United States, Israel, and Iran continues to unfold, its broader societal consequences are becoming increasingly evident. The events of the past week demonstrate how quickly geopolitical conflicts can reverberate through global networks of information and ideology.

For Jewish communities around the world, the surge in antisemitic incidents serves as a stark reminder that international crises often carry profound local consequences. Whether governments and societies will succeed in preventing further escalation remains uncertain. What is clear, however, is that the struggle against antisemitism has entered a new and particularly volatile phase—one shaped by the intersection of global conflict, digital communication, and the enduring power of extremist narratives.