A line of about 20 protesters sat in the street under a steady rain while others behind them held up a banner saying "Don't celebrate genocide" and "Arms embargo now!"
Gustavo Petro in Colombia, Gabriel Boric in Chile, and Luiz Inácio Lula da Silva in Brazil are all vehement critics of Israel.
Antisemitism rally blocked from Dam Square, sparking outrage among organizers.
Victoria Police arrested two individuals and no charges have been laid, according to the Herald Sun.
In contrast, there were 2,301 pro-Israel events recorded, 31% of which were direct counter-protests.
Second Cup - a Montreal coffee chain - said it was "terminating their franchise agreement" after it found that its franchisee made "hateful remarks and gestures."
Three protesters were arrested for assaulting officers.
Trump named Bondi, who served as Florida attorney general from 2011 to 2019, on Thursday, and her confirmation is expected to face fewer hurdles.
The protest reportedly took up all 12 floors of the main Concordia building, and "Free Gaza" was spray painted on lockers.
Mayor Jacob Frey, who is Jewish, said on social media Tuesday night that the group should cancel the seminar with Herzallah, who has called Jewish people “enemy No. 1.”