Answer:
As stated on AIM's official website, the American Indian Movement's goals were: the recognition of Indian treaties by the United States government, among other goals such as sovereignty and the protection of Native Americans and their liberties.
Gassed then burned. Why would you gas them if they are burnt to death already?
It nearly doubled the size of the United States & it made it clear to other countries that America would try to salve problems/differences peacefully.
