Consider season’s greetings. For many, these are unselfconscious gestures. But for others, they are loaded with significance. While we can together celebrate Christmas, Kwanzaa, and Hanukkah after Thanksgiving, along with the new New Year, showing respect for each other, some prefer to exclude. There are the combatants against “the war on Christmas,” fighting valiantly on Fox News.

Indeed, this is the time of year that I often feel like an outsider in my own country. It has felt this way my whole life, though it was much harder as a child. I heard, and learned by osmosis, the Christmas songs, from “White Christmas” to “Silent Night,” and like all American kids, I was charmed. …