I think most Americans will, at this point, agree that the Trail of Tears was terrible. The National Park Service has an official historic trail covering the route, with many exhibits describing the terrible suffering.

Turkey, on the other hand, still tries to pretend that the Armenian Genocide did not happen, even prosecuting people who say it did.

We are by no means perfect, but I think nations which are able to acknowledge and learn from the mistakes of their past have a leg up on those that try to pretend everything was great.