How is it not? God doesnt require me to wear a t shirt that says I am a Christian with John 3:16 on it either, but if someone told me i couldn't do so, they would be violating the law...
		
		
	 
Sorry to truncate there, but I doubt wearing a John 3:16 t-shirt would have been appropriate in this situation either.  They have uniforms, which is actually one of the other infractions listed in the court document.  She received a few uniform violations as well.  She also disobeyed orders to appear for duty, completely unrelated to Bible verses at her desk.
Like I said before, all of this information is right there.  I didn't have to go off looking for Rachel Maddow's or Chris Hedges' opinion before I posted.
But I'll concede, that maybe there is a church out there somewhere that 
requires shoving ones personal beliefs in colleagues faces at all times.  Maybe she even attended such a church, and if so it might be required that she post Bible verses at her desk, according to religious practice and custom, and in that case this particular instance 
might be a violation of her constitutional rights.  But it would be hard to convince the courts.