Virtually no one is an atheist, if you take the Sapiens definition of religion: “a system of human laws and values, which is founded on a belief in a super human order." (Super human orders are not the product of human whim or human agreements, unlike e.g. the laws of soccer)
https://sites.google.com/site/taborsapiens/home/10-the-law-o...
If you read the book it’s clear communism, fascism, democracy and capitalism are really religions too. They require belief in a super human order - a set of laws that exist without backing in science or human agreement. E.g. “All men are created equal”