From an AP story today (Nov. 23), "Americans celebrate Thanksgiving"

        American Indians marked the holiday differently. In
        southeast Colorado, the four-day, 187-mile Sand
        Creek MassacreHealing Run, began where nearly
        200 Cheyenne and Arapaho Indians were killed in
        1864 by Colorado Militia members.

        In Massachusetts, a group of about 250 Native
        Americans Prticipated in the National Day of Mourning,
        an annual event commemorating atrocities upon Indians
        since the Pilgrims stopped in Plymouth in 1620. "They
        think Thanksgiving is a happy thing, like New Year's or
        Christmas, but it's not for us Indians,'' said Sam Sapiel,
        69, a Penobscot Indian.