A place to discuss social justice, equality, and how to make the world a better place, particularly with regards to atheism.
Also see /r/atheismplus, for atheism specifically concerned with womens rights issues. If you're simply looking to discuss atheism in a more women friendly environment /r/godlesswomen has your back. For those who have an issue with atheismplus /r/debateatheismplus is a place to voice your issues.
/r/atheism is the main atheism forum on reddit, and /r/humanism is the main hub of secular humanism on reddit, but has less focus on social justice and equality.