Your statement has ignited a firestorm further down the thread that's a bit incomprehensible. At the moment I'm aware of several Moslem families in my neighborhood with children IN the American military around the world. Still, I'm pretty sure none of them would approve of those children "singing holiday songs", particularly not "Rudolph the Rednosed Reindeer", "Rockin' Around the Christmas Tree", and others.
In fact, I know Christians who disapprove of their children singing any of these secular "seasons greetings" songs from the ACLU approved list. More than likely all the parents should have kept their kids out of that event unless appropriate songs were allowed!
Let me clarify: these same kids were allowed to sing these same songs (no 'real' Christmas songs, this was a "winter concert") in the auditorium for two days for two sets of parents, prior to the field trip. Now, admittedly, I got this information from my seven year old, but the teacher did acknowledge that these three children would not be attending the field trip to the American legion. My daughter asked one of the kids why he couldn't go and he said (I paraphrase)'my mother doesn't want me to visit American soldiers because they hurt muslims'. This may just be these particular parents. Perhaps in other classes going on this field trip, there was no problem. I can only speak to what happened in my daughter's class. I think its pretty clear it was the American Legion that stuck in the craw, not the music.