Thanksgiving was not about the Pilgrims embracing diversity and thanking the Indians for helping them survive. The celebration was about thanking God for the abundance which ultimately resulted from a move away from socialism ( imposed on them by the Colony’s Sponsors) to free market capitalism.
As governor William Bradford commented on the dreadful conditions of 1622:
" . . . the young men . . . did repine that they should spend their time and strength to work for other men's wives and children without any recompense. The strong . . . had not more in division . . . than he that was weak and not able to do a quarter the other could; this was thought injustice. The aged and graver men to be ranked and equalized in labors and victuals, clothes, etc . . . thought it some indignity and disrespect unto them. And the men's wives to be commanded to do service for other men, as dressing their meat, washing their clothes, etc., they deemed it a kind of slavery, neither could many husbands well brook it."
"For this community of property (so far as it went) was found to breed much confusion and discontentment and retard much employment that would have been to their benefit and comfort . . . all being to have alike, and all to do alike . . . if it did not cut off those relations that God hath set amongst men, yet it did at least much diminish and take off the mutual respects that should be preserved amongst them."
In the Spring of 1623, they moved away from Socialism and embraced the incentives of Private Property and Capitalism:
"All their victuals were spent . . . no supply was heard of, neither knew they when they might expect any. So they began to think how they might raise as much corn as they could, and obtain a better crop than they had done, that they might not still thus languish in misery. At length . . . the Governor (with the advice of the chiefest among them) gave way that they should set corn every man for his own particular, and in that regard trust to themselves. . . . And so assigned to every family a parcel of land . . . "
"This had very good success, for it made all hands very industrious, so as much more corn was planted than otherwise would have been by any means the Governor or any other could use, and saved him a great deal of trouble, and gave far better content. The women now went willingly into the field, and took their little ones with them to set corn, which before would allege weakness and inability, whom to have compelled would have been thought great tyranny and oppression."
Thanksgiving is therefore about freedom, private property and the unrestrained ability to worship and show thanksgiving.