Absolutely and truly appalling behaviour on the part of those protesters. Don't like the accommodations? Fine, but that doesn't justify racist and bigoted comments or desecrating the symbols of a religion. 

I'm atheist and have no problem with providing religious accommodations. I would have a problem with schools indoctrinating students into specific religious beliefs but that's not what is going on here. They are simply allowing the students in question time to practice their beliefs. I don't see how this creates harm. If anything it teaches tolerance for those who are different and that is a good thing.