After the firing the warriors put the squaws and children together, and surrounded them to protect them. I saw five squaws under a bank for shelter. When troops came up to them they ran out and showed their persons, to let the soldiers know they were squaws and begged for mercy, but the soldiers shot them all…There were some thirty or forty squaws collected in a hole for protection; they sent out a little girl about six years old with a white flag on a stick; she had not proceeded but a few steps when she was shot and killed. All the squaws in that hole were afterwards killed, and four or five bucks outside. The squaws offered no resistance. Every one I saw dead was scalped. I saw one squaw cut open with an unborn child, as I thought, lying by her side. Captain Soule afterwards told me that such was the fact. I saw the body of White Antelope with the privates cut off, and I heard a soldier say he was going to make a tobacco pouch out of them. I saw one squaw whose privates had been cut out…I saw quite a number of infants in arms killed with the mothers.

– Robert Bent

The guide who rode with Colonel John Chivington describes the indiscriminate killings and mutilations during the massacre at Sand Creek. Bury My Heart at Wounded Knee: An Indian History of the American West by Dee Brown.