Lynn:  I'm not sure who you've been talking to, but I don't think you will be shunned it you say "Merry Christmas" to someone.  Indeed, Christmas is the time for Christians to celebrate the birth of Jesus...that's no problem for me.  At the same time, It's no problem for me if Jews, Muslims,Buddists, or what ever, celebrate their own religious holidays as well.  

I don't mind your religious beliefs or your celebrations.  I do mind that, somehow, you seem to feel that everyone in our country should share them with you.