Snowpiercer is basically the world we live in now. Seperated into classes like the feudal system, we have the peasants, the police / military force and the ruling class. The depopulation aspect is no different than eugenics and is also emblematic of the georgia guidestones where it says to maintain the population under 500 million. The policies of the guidestones are not yet in use but these messages are scribed in stone for a reason. The time just hasn't come yet. This film also shows us the truth of staged revolutions and the controlling of both sides of a war by a single entity. And last but least, using fear and chaos to maintain balance and control. Hence, order out of chaos. (Ordo ab chao).