Communism Is A Secular-Political Religion, and Communist Theory is Secular-Political Religious Text.

Dialectical Materialism implies or shows via documented history: "Antitheism, Antireligion, Secular humanism, and militant agnostic-atheism are historically created due to religious action and doctrine without proof of existence of a deity, ability to answer some questions, or clarify some contradictions in religious text/speech." Due to dialectical materialism saying people are a product of their environment/world, religion commits atrocities historically in the name of God and never proves the existence, converting people into Antitheism, Antireligion, Secular humanism, and militant agnostic-atheism believers. I wish this was an overgeneralization but up to if not over half of human history is the recording of harm to humanity and the planet by some person or group, in the name of a religion or deity. This can not be disputed or easily dismissed and blamed on a few corrupt individuals, this is a systematic religious flaw.

The theory itself does assert this specific causal link as by the very definition of dialectical materialism is cause and effect, and it says that people are a product of their environment. Religion is the opium, meaning religion is the circus, and Marx wanted to abolish the circus. The Communist Manifesto, German Ideology Vol. 1 Ch. 1, and Anti-Dühring Part 3 call for the abolition of religion and is part of every ML beginner study guide. If I am wrong, tell me, but I have read theory from recommend study guides of Marxism-Leninism, they all recommend at minimum these three texts, and the call of abolition is both from my notes and my comprehension of the three texts I mentioned, which can be seen throughout historic applications of communist governments abolishing religion.

Communism has a basic code or set of beliefs. It includes sayings like, "From each according to his ability, to each according to his needs." Communism implies an equitable-egalitarian way of life achieved through a democratic centralist process. While its ideology can evolve, and while its leaders may be criticized for certain aspects, both theory and historical figures are still praised by communists as inspirations; ideals to strive toward. Theory, knowledge, and humanism (or the humanities) are treated almost like gospel. Perhaps it’s a matter of perspective, or perhaps communism truly is a secular political religion. What aspects is it missing?

And to address a few critques: Some will say it's science-based, not faith-based, that doesn't matter if the information is followed nearly the same. Marxism may say ethics is class-determined, but Marx would oppose the working class committing genocide on itself, on the peasant class, or pretty much anyone else, as even Marx referred to communism as humanism. And as for the "purges," the communist manifesto and other texts talk about using proportional force against opportunists, Resisters, and opposition to communism, to the transition to a communist society, and to communist society it self; was Communist leaders and governments inhumane, or were they following and using the parental-guardianship style leadership and authority given to them under the communist manifesto and other theory, calling for the oppression and suppression; think about that because it's a matter of perspective or interpretation, showing even communist theory has room for improvement. It's true other secular groups and views hold their people in high regard, but we're focusing on how communism does it in comparison to religion; if you wanna compare other groups of philosophical-ideological stance to religion, do that in a separate conversation.

Yes, communism claims their vision is obtainable, and religions like Christianity for example claim "if you live by the teachings, heaven is obtainable;" using obtainability doesn’t change anything. Communism currently opposes capitalism and the bourgeoisie, seeking to eliminate them and capitalism altogether, forcing capitalism to accept communism, so that all live and appropriate communism into their political governance; making it not voluntary. While usually being a one-party state, regardless of the number of ideological views allowed. Communists don't require worship, they just require education of theory, of dialectical materialism. Communism is a philosophical-ideological way of life. 

Essentially, Marxist-Leninism calls for communism to provide a totalizing worldview, a non-negotiable moral code, a structure of governance, and an ultimate, sacred purpose. This ideology fulfills the sociological definition of a functional belief system, which, in common discourse, is often described as a "secular religion" a "political religion" or even a "secular-political religion"; that makes communism not just a philosophical-ideological system but a religion through humanity's abilities of reasoning and logic combined with principle beliefs all throughout communist theory. And the process/environment/material conditions of abolishing religion finish or solidify the proof of these things being explained by dialectical materialism.

I wrote an Antitheism Manifesto to continue on this, published it before this due to human error. Click the link to gain more insight.