Is Our Thanksgiving Today A Celebration About A Massacre of Indians?

Is the popular American celebration of Thanksgiving actually a celebration about a massacre of Native Americans by the Pilgrims and Puritans?  It has become popular in the past thirty or forty years to trash America and try to show that America is actually a terrible nation founded upon slavery, slaughter, and oppression.  However, upon examination of real historical facts, it becomes clear that this is yet another myth foisted upon impressionable and uneducated people.  It is important to expose the fraud of the Leftists in our land, and see their deconstruction of American history for what it is.  Celebrate Thanksgiving, knowing that it's roots are truly in a great feast of peace, joy, and tolerance.