I've listened to this book audiobook mainly because I wanted to understand how anyone could seriously deny this terrible phase of human history. As a German citizen you hear about verdicts regarding this topic every now and then, and I never could comprehend why people would be in denial of this. Only a while back a nearly ninety year old woman (Ursula Haverbeck) was sentenced to prison, because she publicly denied that Auschwitz was a extermination camp.
As someone interested in the history of the Third Reich, the historic evidence for this being true is so overwhelming that I can't even begin to imagine how you can have doubts about it. I also don*t see how you could profit from such a thesis, since only lunatics will buy into this and are willing to spend money on it. But apparently I'm wrong, since there seem to be more than enough people in denial of history, who are willing to spread lies for some political reasons.
On the other hand I never understood why it is punishable law (at least in Germany and apparently also in many other countries) to deny the Holocaust. Yes it was an unprecedented act of systematic mass murdering, but you cannot enforce people to accept that by law. I certainly don't want to be disrespectful and/or endorse anti-Semitism, but people are allowed to believe complete bullshit all day long (including all sorts of world conspiracies, faked moon landings, UFOs & obductions by aliens, creationists, earth flatters, etc.), but if it comes to a particular episode of history, then you enforce the truth it by law. Seems odd to me and it is obvious that this does not work.
By the way: This book is not only about Nazi Germany. The last chapter also contains some references to the massacre of Nanking, which is another bad episode of human history, where Japanese soldiers murdered and raped thousands and thousands of Chinese citizens. Interestingly enough, this episode isn't talked as much about as the Third Reich and at least I can't remember to been taught about it in school (although I knew about it beforehand).
All in all, this book is good. It is well structured and you hear some insights of why people believe such things. It contains good arguments why we know that the Holocaust did actually happen, so if you want to argue the case, you'll find some material here.