The real War on Christmas can be found, among other places, recounted by the Thomas More Legal Center and the Catholic League for Civil and Religious Rights:

https://www.thomasmore.org/press-releases/the-war-christmas-continues-the-thomas-more-law-center-fights-back/

http://www.catholicleague.org/the-war-on-christmas-6/

Every year attempts are made by government officials, school officials, and others to still religion from the public square and neutralize religious expression.