khaobadi, Believing in religion makes one religious, non-belief makes one atheist. However belief or non-belief it is the idea that both vouch for one for the existence of supernatural power other absence of it, both are based on belief. Communists believe in the red book of mao just like a religious person believes in the holy book the person belongs to. Communists have their own belief just like the religious groups. Again I will copy the definition of religion and belief to clarify the matter. Here is the definition of Religion "A cause, principle, or activity pursued with zeal or conscientious devotion." (communists have their own belief just like the relegious groups) And here is the definition of Belief "The mental act, condition, or habit of placing trust or confidence in another" (Both these definitions are taken from dictionary.com) -Shiv