It seems that some self-confessed atheists have a penchant for working to deny creationists, and others with a religious belief system, symbols of their belief system in the public sphere. Why is that? If atheism is defined as a lack of belief, then why don't they just ignore the belief systems of others? Live and let live.
The public sphere is supposed to be free of any religious symbols. As far as I know, no Atheists are demanding that churches take down their spires, etc. This isn't a crusade, it's a demand that tax payer money not be spent on religious promotion.