What is the point of Atheist Activism?

[starbucks]

Haven't had a chance to read through all the responses but what I'm saying is that non-Christians oppose many Christian groups and their religious-related views. But these non-Christians aren't exactly atheists either. So when atheists feel compelled to challenge Christian religious-related views, why do they have to turn it into an atheist vs. Christian issue instead of opening up the circle to include non-Christians as well? Why does it have to be "atheist" vs. Christian instead of just general people who oppose Christian religious-related views? It appears that atheists are no longer standing as individuals but are trying to rally together and form an organization or group of sorts like any other religious group who shares a commonality belief. With atheists, it would be no belief in a deity that is their commonality. I would hope that the interest to join sites like this is more because of similar views and not because one believes or doesn't believe in a god.