Controversy
Inspired by US protests on university campuses, on 7 May 2024, around a hundred students occupied a university building, which they named in honour of Walid Daqqa, a member of the Popular Front for the Liberation of Palestine, while demanding the release of the leader of the Lebanese Revolutionary Armed Faction, Georges Abdallah, from a French prison. The same year, Jewish students reported antisemitic and anti-Zionist insults, vandalism of posters against antisemitism, as well as cases of students being violently attacked. A passer-by who allegedly declared herself a Zionist was also attacked. The Simon Wiesenthal Center views this as a trend towards antisemitism in Belgian academic circles. Critics have accused the protesters of extremism, however, the Coordinating Body for Threat Analysis did not find any "structural or hierarchical link" with extremist groups.. Notably, French journalist Nora Bussigny wrote in her book Les nouveaux antisémites (The new antisemites) that she "discovered a more structured and persistent radicalisation than at other universities". In November, a declaration targeting the "Zionists" of Brussels and Europe, led the Jonathas Institute, a centre for studies and action against antisemitism in Belgium, to file a complaint against the student group, for inciting hatred and violence.
In August 2025, the Faculty of Law decided to honour the French politician Rima Hassan as a symbolic gesture. The Belgian League Against Antisemitism criticised the decision, citing Hassan's controversial comments on the "legitimacy" of the antisemitic massacre, as did 50 French intellectuals, given that Hassan is facing charges for incitement to terrorism in France. The Minister-President of the French Community, Élisabeth Degryse, also expressed her opposition. Hassan and ULB students celebrated the decision by chanting in favour of armed conflict: "Long live the armed struggle of the Palestinian people". In December, the university awarded two ULB researchers, among others, with a Science Dissemination Prize. The first, François Dubuisson, has portrayed the 7 October attacks as an attempt by Hamas to "break the lines", for which he was criticised by members of the Belgian political class. The latter, Déborah Brosteaux, has also faced criticism for her pro-Palestinian views.
In front of the European Parliament, Céline Imart of the French political party The Republicans has requested the European Commission to suspend aid for the university: "Ask the Commission to immediately suspend the funds allocated to this university, until the safety of Jewish students is guaranteed and the values of the Union are once again respected". Members of the Belgian political party Reformist Movement have also voiced their concerns. Facing renewed criticism in September, the rector, Annemie Schaus, denied allegations of antisemitism against the university. In contrast, university professors have described antisemitism as "rapidly taking hold on ULB campuses since 7 October". Jewish students have voiced their fear of being targeted, describing the hostility on campuses as "significant". At the Working Group Against Antisemitism of the European Parliament, the Jonathas Institute warned of "an environment in which antisemitism goes largely unchallenged".
Florida has placed the university on its blacklist for its "boycott" of Israel. Instead of ties with Israeli universities, the university has established ties with the Palestinian Birzeit University, despite its support for Hamas in student elections, while maintaining its relations with other universities of autocratic regimes. According to the university, the "suspension" of partnerships and agreements is related to the war in Gaza, as such, the university put forward the allegation of not "complying" to a remark of the International Court of Justice, addressed to Israeli universities. The Belgian Jewish organisation Forum der Joodse Organisaties criticised what it sees as political moves against the academic and scientific networks, concerning Jews and Israelis. Other critics have argued that it constitutes a discrimination and a violation of academic principles. Notably, ULB researcher Eric Muraille claimed that the stance put the ULB and other universities as "political actors, a shift that may reshape how both the public and policymakers perceive academic expertise, while also exposing institutions to political targeting" while pointing at a practice that "hinders the rational resolution of conflicts and fosters self-censorship, intellectual conformity, and the displacement of disagreement into militant and media-driven power struggles". At the same time, pro-Palestinian student groups have protested against ties with "Zionist elements", and some of them against the "Zionist entity". According to the International League Against Racism and Anti-Semitism, the anti-Zionism by members of the university in their support of Palestinian nationalism or boycott, violated the IHRA definition of antisemitism adopted notably by the Senate.
In May 2026, the divide on the controversies and the accusations of antisemitism are seen as deep-seated and enduring tensions. Critics have argued that the principle of freedom of thought is not respected by radical actors.