Nobody but Americans celebrates Thanksgiving. It is reserved by history and the intent of "the founders" as the supremely white American holiday, the most ghoulish event on the national calendar. No Halloween of the imagination can rival the exterminationist reality that was the genesis, and remains the legacy, of the American Thanksgiving. It is the most loathsome, humanity-insulting day of the year - a pure glorification of racist barbarity.
Thanksgiving is much more than a lie - if it were that simple, an historical correction of the record of events in 1600s Massachusetts would suffice to purge the "flaw" in the national mythology. But Thanksgiving is not just a twisted fable, and the mythology it nurtures is itself inherently evil. The real-life events - subsequently revised - were perfectly understood at the time as the first, definitive triumphs of the genocidal European project in New England. The near-erasure of Native Americans in Massachusetts and, soon thereafter, from most of the remainder of the northern English colonial seaboard was the true mission of the Pilgrim enterprise - Act One of the American Dream. African Slavery commenced contemporaneously - an overlapping and ultimately inseparable Act Two.