So a high-ranking foreign diplomat comes to speak at a university campus. First the society which is hosting him backs down from the invitation: perhaps the society leadership has got wind of what is about to transpire.
Instead another student society offers to host the event. A lecture theatre is booked. The speaker stands on the rostrum, but within minutes the entire event is effectively suspended as a shouting, chanting mob breaks up the meeting. Security men surround the speaker whose ability to argue is taken away, literally, when one of the protesters snatches away his microphone.