This is the best summary I could come up with:

On one cold November morning in 1864, more than 200 Cheyenne and Arapaho tribal members, mostly women and children, were murdered in one of the worst massacres in American history.

How we identify our public lands is an important opportunity to be inclusive and welcoming, and to make a lasting impact for future generations,” Michael Brain, Principal Deputy Assistant Secretary of the Interior for Water and Science, said in a statement.

Their western expansion invaded Indigenous land, limiting their hunting grounds and haunting them with the constant threat of violence from the American military.

Indigenous chief Black Kettle of the Cheyenne was committed to his efforts to negotiate peace with then-territorial Governor John Evans and the American Colonist Military, to protect his people, according to the National Park Service.

The Arapaho and Cheyenne tribes – including 750 people, most of whom were women, children and the elderly – followed orders to settle at an encampment by the Big Sandy Creek near Fort Lyon.

The Mestaa’ėhehe Coalition, which united tribal representatives from the Cheyenne and Arapaho and other Indigenous tribes to rename the mountain, said on Facebook “the immense relief of removing a name so associated with the atrocity of the Sand Creek Massacre is felt by many.”

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