No... but other people were, and those people wrote first-hand accounts of what happened. In history those are called "primary sources". That's how history is determined. And I don't know what else to call the depicted slaughter, the wars, and the forcible relocation to useless lands other than systematic eradication.

That wasn't a comment about your account of history but rather your involvement in it. To put another way, would someone who is half-native hald-european be half-victim half-responsible, or is it just ridiculous to attribute blame for periods of history through descent?