He has excited domestic insurrections amongst us, and has endeavoured to bring on the inhabitants of our frontiers, the merciless Indian Savages,whose known rule of warfare, is an undistinguished destruction of all ages, sexes and conditions.
--THE DECLARATION OF INDEPENDENCE
因为印第安人对我们实施灭族，所以我们也要对他灭族。

表面上是以牙还牙，实际是为了美国和美国人更好地生存！（美国眼里最好最重要的理由）