The prophet and warrior Mormon, of Book of Mormon fame, says that Gentiles (non-native Americans in this case) should turn away from their wickedness through repentance or they will face the "bad" sort of God's justice that people want to avoid.
22 And then, O ye Gentiles, how can ye stand before the power of God, except ye shall repent and turn from your evil ways?
23 Know ye not that ye are in the hands of God? Know ye not that he hath all power, and at his great command the earth shall be rolled together as a scroll?
24 Therefore, repent ye, and humble yourselves before him, lest he shall come out in justice against you—lest a remnant of the seed of Jacob shall go forth among you as a lion, and tear you in pieces, and there is none to deliver.
There might be more to say about this, but I will add such things later.