Sounds pretty much the norm for the entirety of human history Every culture or indigenous group "discovered", invaded, "settled" conquered etc by a stronger power suffered pretty much the same fate
Some misleading things in your statement but that aside they did it tough but as I said no less tough and considerably less tough than many others in history
But as with them all...they need to move on.
And for the record I've known, worked, treated and played with a great many black folks so Im not speaking as one not acquainted