Chicago Adopts IHRA Definition of Antisemitism

The City Council of Chicago, Illinois, voted on Tuesday to adopt the International Holocaust Remembrance Alliance’s (IHRA) definition of antisemitism, becoming one of many governments and municipalities to affirm its utility as a reference tool for identifying antisemitic hate crimes and a safeguard of Jewish civil rights.

The measure was passed on International Holocaust Remembrance Day, which commemorated the 81st anniversary of the day when Jewish prisoners were liberated from Auschwitz, the Nazis’ deadliest extermination camp during World War II.

“Chicago now proudly joins a global consensus of more than 1,200 entities worldwide, including the United States, 37 US state governments, and 98 city and country bodies who have adopted this definition,” city council member Debra Silverstein, alderman of the 50th Ward, said in a statement praising the adoption. “At a time when antisemitic hate crimes are surging locally, this unanimous City Council action sends an unmistakable message that anti-Jewish hate has no place in Chicago.”

IHRA — an intergovernmental organization comprising dozens of countries including the US and Israel — adopted the “working definition” of antisemitism in 2016. Since then, the definition has been widely accepted by Jewish groups and lawmakers across the political spectrum, and it is now used by hundreds of governing institutions, including the US State Department, European Union, and United Nations.

According to the definition, antisemitism “is a certain perception of Jews, which may be expressed as hatred toward Jews. Rhetorical and physical manifestations of antisemitism are directed toward Jewish or non-Jewish individuals and/or their property, toward Jewish community institutions and religious facilities.” It provides 11 specific, contemporary examples of antisemitism in public life, the media, schools, the workplace, and in the religious sphere. Beyond classic antisemitic behavior associated with the likes of the medieval period and Nazi Germany, the examples include denial of the Holocaust and newer forms of antisemitism targeting Israel such as demonizing the Jewish state, denying its right to exist, and holding it to standards not expected of any other democratic state.

Chicago’s embrace of the definition comes amid a historic surge in antisemitic incidents across the US and the world.

In 2024, as reported by the Anti-Defamation League’s (ADL) latest annual audit, there were 9,354 antisemitic incidents — an average of 25.6 a day — across the US, creating an atmosphere of hate not experienced in the nearly thirty years since the ADL began tracking such data in 1979. Incidents of harassment, vandalism, and assault all increased by double digits, and for the first time ever a majority of outrages — 58 percent — were related to the existence of Israel as the world’s only Jewish state.

The ADL also reported dramatic rises in incidents on college campuses, which saw the largest growth in 2024. The 1,694 incidents tallied by the ADL amounted to an 84 percent increase over the previous year. Additionally, antisemites were emboldened to commit more offenses in public in 2024 than they did in 2023, perpetrating 19 percent more attacks on Jewish people, pro-Israel demonstrators, and businesses perceived as being Jewish-owned or affiliated with Jews.

Illinois alone saw the eighth most antisemitic incidents in the country with 336, a 59 percent increase from the previous year which led the nation.

The ADL’s “Heat Map,” which tracks hate crimes in real time, shows 105 antisemitic hate incidents recorded in 2025.

In one disturbing incident in the Highland Park suburb of Chicago, an antisemitic letter threatening violence was mailed to a resident’s home. So severe were its contents that the FBI and the Illinois Terrorism and Intelligence Center were called to the scene to establish that there was no imminent danger, according to local news outlets. Later, the local government shuttered all religious institutions as a precautionary measure.

With Tuesday’s measure, Chicago became the second largest US city to adopt the IHRA definition. However, it is now the largest to have it on the books as New York City under its new mayor, Zohran Mamdani, recently revoked it along with a series of other executive orders enacted by his predecessor to combat antisemitism

US Jewish groups sharply criticized the move.

Israel’s Foreign Ministry similarly lambasted the reversal as an invitation for intensified bigotry against Jewish New Yorkers, saying, “On his very first day as New York City mayor, Mamdani shows his true face: He scraps the IHRA definition of antisemitism and lifts restrictions on boycotting Israel. This isn’t leadership. It’s antisemitic gasoline on an open fire.”

The definition could have been problematic for Mamdani, a far-left democratic socialist and avowed anti-Zionist who has made anti-Israel activism a cornerstone of his political career and been widely accused of promoting antisemitic rhetoric. A supporter of boycotting all entities tied to Israel, he has repeatedly refused to recognize Israel’s right to exist as a Jewish state; routinely accused Israel of “apartheid” and “genocide”; and refused to clearly condemn the phrase “globalize the intifada,” which has been used to call for violence against Jews and Israelis worldwide.

Follow Dion J. Pierre @DionJPierre.