I imagine that when practically every country on earth save one (the USA) has killed your people for sport...
...You're happy to receive even 20% of the independent Land promised you.
Being part American Indian and a member of the Sault Ste. Marie Tribe of Chippewa Indians, I can attest that historical America's hands are not clean when it comes to killing "people for sport."
Nor, I'm sure, must I remind you of the on-going holocaust in this country called "choice", which cuts across all racial, cultural, and financial groups, but which - in the end - still kills Americans nonetheless. And, as you know, both "holocausts" in this country were (and are) sanctioned by this government.
None of this is to say that the war of expansion against the Indians in 18th and 19th century America is analogous to Israel's occupation of a land ceded to them both by God and its Arab neighbors. Just wanted to chide you for a rare "sin of omission" on American history. :)
BTW, this is an excellent article, and thank you for posting it.