If I pick up a book with spaceships on the cover I want spaceships. If I see one with dragons I want there to be dragons inside the book. Proper labeling. Ethical labeling. I don't want to open up my cornflakes and find that they're full of pebbles... You need to respect the reader enough not to call it something it isn't.
In my book I detail the critical information we obtained from al Qaeda terrorists after they became compliant following a short period of enhanced interrogation. I have no doubt that that interrogation was legal necessary and saved lives.