The story of the celebration of 1621 was made up in 1890. It is fiction. It was only after the First World War that a version of such a Puritan-Indian partnership took hold in elementary schools across the American landscape. We can thank the invention of textbooks and their mass purchase by public schools for embedding this "Thanksgiving" image in our modern minds. It was, of course, a complete invention, a cleverly created slice of cultural propaganda, just another in a long line of inspired nationalistic myths.
The first Thanksgiving Day did occur in the year 1637, but it was nothing like our Thanksgiving today. On that day the Massachusetts Colony Governor, John Winthrop, proclaimed such a "Thanksgiving" to celebrate the safe return of a band of heavily armed hunters, all colonial volunteers. They had just returned from their journey to what is now Mystic, Connecticut where they massacred 700 Pequot Indians. Seven hundred Indians - men, women and children - all murdered.
Pass the turkey please.