I was so fully engaged with the story and the characters that anything lacking in this series was unnoticed.
In terms of "feels like" the sets, costumes and make-up, with some stunning old cars anchored the show in the period.
The story is fictional while drawing on historical recollections of the time. It's not specifically about the thief of Indian children, rather it is the thief of these children that represents the extreme end of a more general deconstruction of the issues of the time.
The lead character is a truly hideous human. Is he working for the FBI or the KKK? The good news is that he gets what he deserves in the end.