It is not "a long time past." It is current. It is not only a distant "nomadic" culture that suffered. It is a present, daily issue for thousands of survivors.
Ottawa has in last two years made settlements with 34,000 residential school survivors of physical and sexual abuse.
It is ludicrous for you to invoke Romans and Viking in order to compare your situation with these people. If your were taken away from your parents at an early age, punished for speaking English, possibly beaten and/or sexually abused, do you think you would be the posting this confident, cheery advice for others? I doubt it.