People descended onto Cole's Hill in Plymouth to “honor Indigenous ancestors and Native resilience” during a National Day of Mourning.

The ceremony dates back to 1970 when Kisha James‘ grandfather was invited to speak at a commemoration of the 350th anniversary of the Pilgrims’ arrival in Plymouth.

For more than half a century, groups of Native Americans have been gathering on Thanksgiving to mark a National Day of Mourning at a historic site in Massachusetts. They honor their ancestors who were subject to atrocities by settlers in the 17th century.

NBC will air its 23rd annual National Dog Show Presented by Purina on Thanksgiving Day; here's where you can watch the canine competition

There are more than 570 federally recognized tribes across the country, including several in Minnesota and Wisconsin.