Three protesters were arrested for assaulting officers.
The protest reportedly took up all 12 floors of the main Concordia building, and "Free Gaza" was spray painted on lockers.
During the "night of rage" event later that evening, speakers said that they would never recognize Israel and glorified Haniyeh and other terrorists who died fighting against Israel.
In addition to investigating the incident, Hampstead Mayor Levi demanded Montreal apologize to its residents and issue a statement stating the city did not support the use of its assets in this way.
"Get out of Canada," said a Montreal poster with a Nazi flag and a modified Israeli flag with a swastika instead of a star of David. "Zionism equals terrorism."
Hampstead mayor Jeremy Levi condemned the Kehal Israel cemetery memorial park's vandalism, in which the stones traditionally placed on graves out of respect and to mark a visit were misappropriated.
Falafel Yoni was recently placed on an anti-Israel boycott list and has been bombarded with what it says are fake, politically motivated reviews.
Solidarity for Palestinian Human Rights (SPHR) McGill drew outrage over a promotional image of keffiyeh-garbed men reading while armed with light machine guns and rifles.
There are calls for decisive action by Montreal Mayor Valérie Plante to put an end to an atmosphere of permissiveness toward antisemitism in the city.
The Yeshiva Gedolah in Montreal was the target of two shootings in November 2023, the first on November 9 and the second on November 12.