The latest renaming try is underway here in California by a major supermarket chain referring to Thanksgiving as Harvest Festival. I'm sure this term will grow in usage as the word "Thanksgiving" implies a Someone as a recepient of the giving of thanks. We can't have that.
Oh, I'm sure that it's because it conjures up images of early settlers killing indians.
Don't worry, folks will just say Thanksgiving is just a name and they will, "Remember the day when it was all about giving thanks, and not the commercialization of the holiday itself".
'Scuse me while I go barf now.