The natives had established a good relationship with animals, but the settlers slaughtered them indiscriminately. In part, they also used them for meat and for their hides but there was also a policy to destroy the buffalo in order to starve the native people into submission.
There was a famous justice of peace named Roy Bean. One day an irishman killed a chinese man. He was imprisoned but a mob of more than 200 irishmen threatened to kill Bean if the killer wasn’t freed. Bean read the law and determined that killing was to take another man’s life, and that did not apply to chinese. The irish guy was set free.