Re: They were rioting???
<...But the police could do nothing more than surround the Jewish students and community members who were now trapped in a corner of the plaza, grouped under the flags of Israel, while an angry, out of control mob, literally chanting for our deaths, surrounded us. Dr. Astren and I went to stand with our students. This was neither free speech nor discourse, but raw, physical assault.
Okay, so it's not a riot, depending on how you define one. Maybe it's just standard formal debating technique for the left. In any case, if they broke no university rules, they won't get punished.