There is a time and a place for views to be aired and a mall is not one of them.  He could have asked to have an area where he could have done a presentation on the Christ child and the wise men coming to visit and how the time really was in the spring time if he wanted, but how we celebrate Christ' birth now by singing songs such as Silent Night, O Come All Ye Faithful and Joy to the World, Just to name a Few.  There are also stories of how Santa first visits the Christ child (storybooks of course) but Santa also kneels at the side of the Christ child's manger bed.  He could tell how Santa and the reindeer are the secular stories that are shared for those who may not be able to have Christ teachings taught in their homes but many homes teach of Christ and also have Santa Claus.  These homes know that Santa is a good person who loves children like God does and wants to make children happy by giving gifts like His son received gifts. When children are older they are ok with the truth.