The man in the video is radical ecologist Derrick Jensen. I linked to his Wikipedia page which provides some background on his life and work.
This video is off-topic for him, but as you can see from the back and forth with students he knows his stuff. What is more important to notice is the pushback he gets from certain students. Ask yourself if you can, or want to, share a polity with people who act like this. Who think like this.
That’s all I’ve got, the video speaks for itself.
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