Yes, I was referring to their migration from Asia, to some degree. There are actually more immigrants in this world than most people believe. A vast amount of societies on this planet have migrated at some point in their history.
Believe it or not, most of the "native Americans" here before us were violent, murderous people, continually waging war against each other for territory rights and domination against one another. Many of them were not peaceful people. Europeans did not come here to wipe out a peaceful society. On the contrary. Many of the original Europeans who settled here were peaceful, God fearing men and women who came here to escape a tyrannical dictatorship in England and from unjust taxation.
The "natives" here before us were NOT peaceful people. Some were, yes, but most were not. Wars have been waged for thousands of years over territory rights and the such.
But to just claim that these people had a right to be here and be left alone and everyone else living here should be shipped out, is not a very accurate suggestion.