From the UK, a news report about a different kind of Christmas War:
Father’s finger bitten off at school nativity (08 Dec 2011)
A father had his finger bitten off in a brawl with another parent as they waited for their kids’ nativity play to begin.
Parents intervened to pull the men apart as they fought at Harton Primary School, in South Shields, South Tyneside, before the children’s performance.
The 32 year-old victim was taken to hospital where his hand was treated. A 39-year-old man was arrested on suspicion of assault and bailed.
See what happens when we let religion in the public schools? Maybe Justice Stevens was right, after all.