There is always talk of the "war on Christmas" and as an American, I cherish the freedom I have to observe and celebrate it a manner of my own choosing.
I would point out two missed points: in England, it was illegal in 1647, as ordered by Puritans, to celebrate or observe Christmas. This was the work of separatists.
In Colonial America, Massachusetts also banned and fined anyone for celebrating Christmas.
I have friends of many different faiths, and of none. Many of them celebrate Christmas in America in some way.
Oddly enough, I has been never had a non-Christian tell me not to celebrate Christmas, or question why or how I do. That activity seems monopolized by certain members of various Christian denominations who ignorantly think that they can choose how others celebrate. They are the only ones who foolishly tried to stop my observance of Christmas. And failed.