Native American runners honor men who refused to participate in Colorado's Sand Creek Massacre

Members of an honor guard from the Arapaho and Cheyenne Native American tribes participate in a sunrise gathering marking the 150th year since the Sand Creek Massacre, at Riverside Cemetery, in Denver, Wednesday Dec. 3, 2014. Denver's oldest cemetery is the resting place for U.S. Army Capt. Silas Soule, a hero to many Native Americans, who was one of two U.S. Army officers who refused to fire on the Native American families killed at the Sand Creek Massacre in 1864. (AP Photo/Brennan Linsley) (The Associated Press)

This archival photo provided by the Denver Public Library, Western History Collection, shows Capt. Silas Soule, who was one of two U.S. Army officers who refused to fire on the Arapaho and Cheyenne families killed at the Sand Creek Massacre in 1864. Soule later testified against his commanding officer in the attack, Col. John Chivington, and was later shot and killed in downtown Denver. Two fellow soldiers were accused of killing him but were never brought to justice. The 150th anniversary of the killings of Native Americans, mostly women, children and the elderly, was marked by a 180-mile healing run, ending in Denver on Wednesday, Dec. 3, 2014. (AP Photo/Denver Public Library, Western History Collection) (The Associated Press)

Members and supporters of the Arapaho and Cheyenne Native American tribes are blessed by tribal leaders as they arrive for a sunrise gathering marking the 150th year since the Sand Creek Massacre, at Riverside Cemetery, in Denver, Wednesday Dec. 3, 2014. Denver's oldest cemetery is the resting place for U.S. Army Capt. Silas Soule, a hero to many Native Americans, who was one of two U.S. Army officers who refused to fire on the Native American families killed at the Sand Creek Massacre in 1864. (AP Photo/Brennan Linsley) (The Associated Press)