What motivation did John Chivington have to seek revenge against the Indians?

John Chivington sought revenge against Native Americans largely due to a combination of personal beliefs and military ambitions. As a former Methodist minister, he held strong anti-Indian sentiments, viewing them as obstacles to American expansion and civilization. The brutalities of the Indian Wars heightened his desire for retribution, ultimately culminating in the Sand Creek Massacre of 1864, where he aimed to assert dominance and secure his legacy as a military leader. Chivington's actions were driven by a mix of racial prejudice, a desire for glory, and a belief in Manifest Destiny.