![](https://www.historynet.com/wp-content/uploads/2017/09/Sand-Creek-massacre1200.jpg)
On November 29, 1864, U.S. cavalrymen attacked a Native American village at Sand Creek, Colorado Territory, killing dozens of Indians, including many women and children. ((State Historical Society of Colorado, Denver, USA/De Agostini Picture Library/Bridgeman Images))
(State Historical Society of Colorado, Denver, USA/De Agostini Picture Library/Bridgeman Images)