I remember an elder explaining to me that in Revelation when it talks about the merchants mourning the end of Babylon the Great, that it had to do with the governments doing away with holidays like Christmas because of all the money the stores wouldn't make anymore.
Anyone hear that one? My opinion is that even if the governments did away with religion, they would still celebrate holidays, they would just call it something else. Just like some of the offices I have worked in call the Christmas Party, the "Winter Party" etc.