Chants of “Free Palestine” and “Never again” filled the air on Tuesday evening in front of The Sinclair music venue in Cambridge. A group of around 150 people, including Sinclair workers and supporters, gathered outside of the venue to protest Israeli singer-songwriter Ishay Ribo’s concert that raised funds for the “healing and rebuilding of Israel,” according to the event webpage. Hosted by Harvard Chabad, the event featured two performances on Feb. 27. (A second show was added after the first sold out.)

According to several Sinclair staff members, the entire staff of approximately 40 people boycotted, and third-party workers were hired to staff the event. A spokesperson from The Sinclair declined to comment about event staffing; Harvard Chabad did not return questions about event staffing.