Global warming, like Marxism, is a political theory of actions, demanding compliance with its rules.
Those who buy in to global warming wish to drastically curb human economic and industrial activities, regardless of the consequences for people, especially the poor.
The idea that human beings have changed and are changing the basic climate system of the Earth through their industrial activities and burning of fossil fuels - the essence of the Greens' theory of global warming - has about as much basis in science as Marxism and Freudianism.