[Faceman]

While I acknowledge the try to separate religion from state, I strongly disagree with this law.
It is a strong crackdown on personal freedom and IMHO outright fascistic.
It's laws and movements like this one that make it so damn difficult for me to be a lefty sometimes. Tolerance swings both ways, and you can't just forbid something because you don't like it and feel that your rationalistic ideology is superior to the religion of somebody else.
Sadly the followers of the Enlightenment have become very similar to a religious movement and especially in very secular countries like france they act as if atheism was the state religion.
I fully agree with Yorick on this, and kudos to his very concise examples, but let me add another thought:
While it may not be the rule, some of these children might be deeply religious and for that feel "sinful" without wearing their head scarf or their Kippa, a position which no state should put its citizens in.
And for something absurd:
Imagine a western girl moved to an African or South American tribe were being topless is normal for women. And now imagine she was FORBIDDEN to wear a top.
"When in Rome, do as the Romans do" is a good piece of advice, but it shouldn't be a law.