My faith in what? Government?
Go ahead... play games.
Which is fine - your an atheist - also a protected religious belief under the constitution. Do you want theists acting on behalf of the government ripping books that don't sufficiently recognize the existence of a theistic god out of the library. There are a lot of Christians who think atheism is evil and doesn't deserve constitutional protection.
The same constitution that protects your religious ideas (or anti-religious ideas) has to protect everyone's. Otherwise,
The 1st Amendment embodies the idea that everyone can accept whatever religious belief they want, no matter how stupid they are. If you don't like it, amend the Constitution.
That doesn't shield religious ideas from criiticism. Feel free to hate Islam - or whatever religion you choose to despise. But ... if you're an agent of the government, follow the constituition that you've sworn to defend.