Hopefully this is not a recent revelation for you, as this has been the case for decades now. In case you haven't noticed this has infected our entire school system and is not limited just to the halls of "higher" education.
As for the video, it is a total waste of time watching this. If you had specific examples and where they are in the video it would be helpful. But few are going to watch 18 minutes of this guy talking to get perhaps the few examples of what you say are anti-Trump sentiments being expressed. I watched about 8 minutes and heard zero instances before I finally threw in the towel.
Skip up to where he is working with the other fellow on the white board.