On balance Native Americans are the worlds most successful mass murderers. They introduced us to smoking tobacco which has killed countless billions. There are more Native Americans alive today than when we first settled. We grew their population over time with industry and helped them to kill billions. It's all perspective I guess.
What's funny about this is that this is how SJWs think. They like to say we purposely gave them "infected blankets" when the truth is cross cultural contamination simply brought a disease they had no immunity to.
edit: Not all of history is a boogeyman waiting in the shadows.
edit 2: Shit happens
Yeah, that's what My dad thought when the Japs were shooting at him. He was an artillery commander so he shot back.