Should we be celebrating or Mourning Thanksgiving Day? A Dark History for Native Americans?

There isn't anyone on this planet who hasn't suffered at sometime in history; the purpose of Thanksgiving was to be thankful for friends and the bounty of the land; that isn't changing to this day; at the very least we are to learn from the past mistakes and try not to promote them; life is a gift that is meant to be celebrating; look at who is our next president; the world is an endless possibility to be thankful and give and share thanks to move with a better foot forward in time and humanity