Beliefs are restricted in some US government establishments.

The problem is that any site or Facebook page can be reported as "offensive" by anyone, and the Evangelical Christian sector has people that do nothing with their lives other than go around reporting every piece of content that they find "offensive", from Harry Potter fan clubs to Art of Satan Online (which is brilliant, by the way!). They edit Wikipedia pages, write constant letters to editors of major news sources who dare report on anything that isn't inline with their beliefs... it's really rather frightening.
As to religion in the workplace, I see the point. Why risk offending one person by asking them not to have a pentagram at their desk, when you can just ask everyone to keep religious symbology out of the work place.
Lol they dont just report Harry Potter stuff, they'll go so far as to steal that kind of stuff from libraries just to burn them!