The "assertion" that atheism is not a religion needs "support"? Really? OK, happy to oblige. My support is the primary definition of religion offered by Merriam-Webster's Collegiate Dictionary: "the service and worship of God or the supernatural". (I call this the "primary definition", though it does follow a highly technical one: "the state of a religious". Here is the example given for that usage: "a nun in her 20th year of religion".) Here's more support: Our Pew Research source brackets atheists with those "unaffiliated" with a religious faith. And here's even more support: Our CUNY Graduate Center source brackets atheists with those identifying with "No religion group". All clear?