Offered up a gun for sale . Obviously the pics where not his. Did a Google on his email and sure enough known scammer email address used on several other forums.
I wouldn't call Browns book as a full perspective at all. In reality it's pretty biased.
What happened between the Native Americans and Europeans after first contact was unfortunate, but mostly inevitable. It's what happens when a modern industrial culture comes in contact with one still more...
Buzz, treaties where changed almost as soon as they were signed in some cases. For instance the Crow reservation at one time started in Paradise valley and its agency was located in Livingston, then it was shrunk and the agency moved to Absarokee, then it was shrunk again and moved to Crow...
In the history of treaties with the Tribes that's never happened so why start now? It's not like treaties are monolithic and can't be changed. IMO they should all be renegotiated to reflect modernity.