The Christmas tree alone, in my opinion, is not enough to warrant a protest: it has many meanings and purposes, and it's not too religious.
A letter would be fun anyway, just for kicks. NeferKa's got a great idea: Holy Ornaments!
Remember on the Venganza home page a while back? There were instructions on how to make a Flying Spaghetti Monster Idol out of that fuzzy wire stuff? You might want to try that.
Here's a good page, too:
"In the first place, God made idiots. That was for practice. Then he made school boards."
He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.
"If it turns out that there is a God, I don't think that he's evil. But the worst that you can say about him is that basically he's an underachiever."