Friday and Saturday was the super-secret,
closed-door BDS organizing conference held by NYU's American Studies Department under the direction of
Lisa Duggan, an NYU Prof. and incoming President of the American Studies Association.
Duggan, a big supporter of the anti-Israel academic boycott, apparently did not want dissenting voices present:

The agenda was stacked with anti-Israel professors. The lunchtime program explicitly was oriented toward
organizing anti-Israeli groups on campus, including an appearance by someone from Students for Justice in Palestine.

The conference was controversial not just because of the topic, but the one-sided stacking of the deck by an academic department and the exclusion of non-approved attendees. The event was not even open to all NYU students.
A group of NYU students wrote a
letter of protest to NYU's President, which reads in part:
From the beginning, this event has been shrouded in secrecy; Professor Lisa Duggan, the event’s sponsor (in a post that has now been removed) cautioned, “PLEASE DO NOT post or circulate the flyer. We are trying to avoid press, protestors and public attention.”