Actually, the "war on Christmas" is not being waged by atheists (such as myself), but by marketers, who dare not offend a single potential consumer. All the advertising you hear these days is for a generic "holiday", not for any specific holiday. Christmas's religious implications have been muted; Hannukah (a relatively minor holiday in the Jewish tradition) has been elevated; Thanksgiving has been steam-rollered by Santa; and then we have Kwanzaa, a manufactured holiday IMHO.  All "celebrated" because they can be used to sell cheap Chinese junk. That is the real offense against your holiday.

Because I share the same name as the former city manager who is connected to this subject, I need to state that I am not him, and he is not me.

Merry Christmas!