As an author Adolf Hitler was a great painter and as a painter Adolf was a great author but because of human nature being what it is, there is still a strange fascination with the man who dominated the 20th Century.
That is exactly why his book, Mein Kampf, is riding high in the Kindle store chart, we may hate the man and what he did but we don't ignore him.
The privacy of downloading also helps, much easier than borrowing it from a library or taking it to the counter in Waterstones.
It's the same morbid attraction that draws us to the head lopping nasty piece of work that was Henry VIII rather than almost any other British monarch or Billy The Kid, Vlad the Impaler or Bonnie & Clyde.
What makes Mein Kampf most interesting is that it is an insight into the thinking and his political ideology of a man who would go on to become labelled the most evil of the last century.
When you read his thoughts on the 'glorious Aryan race' and 'the satanic Jew', the words hit that bit harder because you know how he later acted upon these chilling thoughts.
I have seen and heard calls for the book to be banned, even castigating people for reading it and while it isn't a comfortable book to read, it is incredibly important.
It should not be a surprise so many people want to read it and learn what drove an artist from Austria to do what he did and should serve as a warning from history what could quite easily happen again in the 21st Century.