There is no war on Christmas.
Seriously, did Bill O'Reilly say that Christianity was not a religion? Did Bill O'Reilly really say that Christianity was a philosophy and not a religion? That may be the dumbest thing I've ever heard from Fox News and Bill O'Reilly. According to the all-knowing Merriam-Webster's dictionary, Christianity is the religion derived from Jesus Christ, based on the Bible as sacred scripture, and professed by Eastern, Roman Catholic, and Protestant bodies.
I'll have more on the stupidity later.