The radical environmentalists want the same things -- to return humanity to the stone age. These people are in revolt against 5,000 years of civilization. There is a certain mentality that does not know how to create, so instead it craves destruction for destruction's sake. In their world, 99% of people will live in prehistoric misery while the ruling class will live in luxury -- they will live in palaces and jet all over the world to environmental conferences and plan which group of humans is "overpopulated" and needs to be exterminated.