The War has Broken Out Again! War on Chrismas Trends in America

Christmas shoppers pass a sale sign on Oxford Street in London, Monday, Dec. 22, 2014. Shopping streets in London were crowded during the buildup to Christmas day on Thursday.
Which one do you say; Happy Holiday or Merry Christmas?
Every year at the beginning of December some Americans engage in a ridiculous rhetorical ritual that recycles righteous arguments about whether people should say to one another Happy Holidays or Merry Christmas. This question is one skirmish in the broader cultural and political battle that come under the heavily ladened frame of the 'war on Christmas.'