The assaults on religion in the public square – from crosses on public land to nativity scenes – are motivated from the premise that atheism is the truly neutral position. Atheists these days claim that they lack belief, not that they have a positive belief. Society should be neutral, so our public square should be devoid of religious expressions.
So if they are taking on religious-type expressions, how can they go on claiming that their view is neutral?
Of course, it isn't. Atheism is a positive belief about God, just like any form of theism is. We'd just like the terms of the public debate to be consistent.