Atheism can't exist without evolution. Atheism is needed to justify absolute state control of its subjects. Look at the history of the persecution of religion by the Soviets.
Look at the history of persecution of anyone who disagreed with them by almost every established religion ever... "Atheism can't exist without evolution"... Why the hell not?
And why is atheism needed to justify absolute state control of subjects? Religion has a long a brutal history of being used as a tool to enforce absolute control over people.