Oh, things are even worse than that!

Anyone can add to the display there, except atheists. Because thinking rationally is an obvious trick to make people into atheists.

But yeah, the celebration of Christ's birth, which most likely happened in the spring, and which was moved to the current date to overshadow the pagan celebrations of the solstice, is the obvious and only reason for the season. It doesn't really matter to these people that there are other religions, or those with no religions, who also celebrate at this time of the year, for completely different reasons. It's only THEIR holiday that matters, and not letting them force feed everyone else with their religious fairy tales is denying them their rights.

Happy Solstice, everyone.