My first thought was that it was a spoof mocking humanity-hating eco-freaks - not a video by eco-freaks.
Update: Predictably, many eco-nutter Guardian readers think the video is just great. Though there are lots in the opposite camp. One of my favourite comments is from 'Monbiot's TinyBrain':
This video encapsulates all that is wrong with modern environmentalism. Fascism, bullying, pathological hatred of humans and what they do. It's simply a masturbatory fantasy for all warmists, comply or die.