Presumably, citation is requesting some factual evidence that this is true, not that people feel it is true.

Though both are important, if there's not actually a "War on Christmas" and Obama didn't actually rename the White House christmas tree the winter tree, but the new President has been cited by his son as running because those things did happen, then both these facts are interesting.

edit to add: something to look forward to, when Trump announces he's renamed the tree to the Christmas tree, even though it never got called anything else. I'm trying to imagine how they'll spin that without actually telling a blatant lie, probably just by making a big fuss about it and letting other people online lie about it.