US to expand memorial site for Native Americans massacred in 1864

… in Colorado, which commemorates the Native American victims of an 1864 attack … sleeping encampment of approximately 750 Native Americans, killing more than 230 Cheyenne …… in Colorado, which commemorates the Native American victims of an 1864 attack … sleeping encampment of approximately 750 Native Americans, killing more than 230 Cheyenne …