You are insulting religion. There is nothing culturally coherent, historically permanent, spiritually elevating in leftism. It is a cheap mix of common passions: greed, lust, and sloth; that is the opposite of religion.
The leftist/Marxists I know are atheists. They see socialism/Marxism and government as a means to perfect mankind. Could this be classified as an amorphous religious worldview since it is based upon belief?