Why can we have a PC Santa but not a PC Jesus?

Every Christmas that comes around it seems we are expected to be so PC as to go along with Black, Asian and Hispanic Santa Clause. But it seem many people are very inflexible when it comes to being that PC about Jesus. To many to have a Asian, Caucasian, Hispanic, and Black Jesus (though more seems to put up less opposition to) people have a cow. Both are historical characters but is it less palatable to have a PC Jesus because He is a religious icon where Santa is mostly a fictional creation derived from St. Nicholas? I have always wondered that.