Milo Yiannopoulos, Ann Coulter, and Steve Bannon are headed to the University of California-Berkeley for “Free Speech Week” later this month and professors and graduate students are scared out of their wits.

According to the San Francisco Gate, “177 professors and graduate students have signed an open letter urging thousands of colleagues and classmates to boycott campus for four days this month to ensure their ‘physical and mental safety.’”

The letter is titled “Boycott the Alt-Right @UCBerkeley” and it asks for leniency during the four-day event for all employees or students who decide to stay home out of fear for their safety:

As concerned faculty members, we cannot remain silent while students, staff, colleagues, and fellow community members are threatened.

Therefore, as faculty committed to the safety of our students and our campus, we are calling for a complete boycott of all classes and campus activities while these Alt-Right events are taking place at the very center of UC Berkeley’s campus. As faculty we cannot ask students and staff to choose between risking their physical and mental safety in order to attend class or come to work in an environment of harassment, intimidation, violence, and militarized policing. The reality is that particularly vulnerable populations (DACA students, non-white, gender queer, Muslims, disabled, feminists, and others) have already been harmed, and are reporting increased levels of fear and anxiety about the upcoming events, the increased police presence on our campus, and how all this will impact their lives and their studies.

Here is what the letter asks for:

1. Classes to be canceled and students to stay home — “Some students CAN NOT attend by virtue of their DACA status and the imminent threat that these campus events hold.”
2. Close buildings, departments, so staff can stay home — “No one should be forced to work surrounded by men with clubs, police with guns and the sting of teargas.”
3. Any faculty that goes ahead with classes shouldn’t penalize students who are absent — “It is unfair and discriminatory for faculty to schedule exams or require attendance during this week.”

Last week, conservative speaker Ben Shapiro was at UC Berkeley and that event went off without a hitch. Of course, the “extensive police presence,” as the SF Gate noted, “kept hundreds of protesters at bay,” and all for the low, low price of $600,000.

But apparently the next set of speakers are just too far right of the “alt-right.” However, the “Free Speech Week” event isn’t set in stone. As of Sunday, the proper fees, reservations, and security arrangements had not been procured for the event to move forward.

As for canceling classes or students skipping, the university is leaving it up to the faculty as to how they conduct their classrooms.