Why only religious beliefs protected?

[FrustratedFool]

Criminally charged? That's not what this is about. Someone might well be told by a supervisor to take it off, though, or more likely may feel they can't go against their company dress code whereas the Christain employee knows they can.

Let's assume that there's been at least one case of an employee not being given accommodation for their non-religious beliefs. Why should they be treated differently in law to a religious person?

I care about social equity, consistency in law, discrimination, and the demise of religion in society. But my personal concerns are irrelevant to the political and legal issue here.