Supporters of Native Americans pause following a prayer during the 38th National Day of Mourning at Coles Hill in Plymouth, Mass., on Nov. 22, 2007. Denouncing centuries of racism and mistreatment of Indigenous people, members of Native American tribes from around New England will gather on Thanksgiving 2021 for a solemn National Day of Mourning observance.

Thursday’s National Day of Mourning in Plymouth, Massachusetts, will honor Indigenous people who’ve suffered centuries of racism and mistreatment. It’s the 52nd year the event has been observed.

(Image credit: Lisa Poole/AP)