Seems pretty clear that the student who was ejected was simply creating a disturbance. Presumably he was not forced to attend, nor was attendance requested by any faculty, so I fail to see how even the most vulgar speech could be deemed harrassment. Indeed, it seems that the student(s) in question intended atnd attempted to harass the speaker!

Having been ejected and prevented from completely sabotaging the event (which cost someone money, and presumably others wished to enjoy without interruption by hecklers), he and his troublemaking friends choose now to continue making a spectacle. Seeking public approval of their disruptive behaviour from authorities at DePaul, when they should be facing reprimand for their own anti-social behaviour.