Everything historically wrong with The Boy in the Striped Pyjamas by John Boyne

Here is a You tube video I watched yesterday now I’m by no means a historian however when it comes to dark history authors should do proper research and not just write any fictional story based on it . The video here is goodly made to be honest facts are straight the good and bad is shown and mentioned .The only thing I don’t like very much is the voice acting .

ETA : Here comes another video criticizing the flawed book and later they released a film in 2008