with the opening of the Sand Creek Massacre National Historic Site. “We’re the only unit in the National Park Service that has ‘massacre’ in its name,”

“We remember the Civil War as a war of liberation that freed four million slaves,” Kelman says. “But it also became a war of conquest to destroy and dispossess Native Americans.” Sand Creek, he adds, “is a bloody and mostly forgotten link” between the Civil War and the Plains Indian Wars that continued for 25 years after Appomattox.

Another casualty of Sand Creek was any remaining hope of peace on the Plains. Black Kettle, the Cheyenne chief who had raised a U.S. flag in a futile gesture of fellowship, survived the massacre, carrying his badly wounded wife from the field and straggling east across the wintry plains. The next year, in his continuing effort to make peace, he signed a treaty and resettled his band on reservation land in Oklahoma. He was killed there in 1868, in yet another massacre, this one led by George Armstrong Custer.

As the nation looked to the West for more land, this agency participated in the ethnic cleansing that befell the western tribes.

et in these more enlightened times, it must be acknowledged that the deliberate spread of disease, the decimation of the mighty bison herds, the use of the poison alcohol to destroy mind and body, and the cowardly killing of women and children made for tragedy on a scale so ghastly that it cannot be dismissed as merely the inevitable consequence of the clash of competing ways of life