Atheism is a religion like bald is a hair color.<quoted text>
Athiest is a Religion.
You must believe with out proof that God does not exist.
Believe with out proof is faith.
The dictionary says the word Religion can be substituted for the word Faith.
So you are here Preaching your religion.
According to most references, atheism can be a belief that there is no God. But MORE INCLUSIVELY it can also just be a "disbelief in the existence of a supreme being or beings". When describing a whole group of people, the more inclusive definition is always the correct one. Mining for a specific definition that suits your preconceived bias is just another form of bearing false witness.
Even without a well defined dictionary reference, basic word origins should be sufficient to tell you you are wrong. Theism is a belief in one or more deities. Atheism is literally "NOT-theism" (a-theism). So it is nothing more than a categorical reference to describe everybody who is not specifically a theist.
I've got a feeling you already knew all of this and are lying in an attempt to incite hate against a whole group of people. Prejudicial hate is what Christians are best at.