Year ago I watched amazing documentary by Adam Curtis called The Century of Self. Nephew of Sigmund Freud - Edward Bernays - was a villain in that documentary. I've got chills when I saw him talking about propaganda and marketing.
This year I decided to read Bernays' book and I must say that I was very surprised. After reading his own words - he doesn't seem to be this evil person who "made women smoke."
He seemed smart, ahead of his time, had concerns about misuse of propaganda/PR/marketing. But he said that there is no guarantee against misuse. And it makes sense to me as technologist. It is exactly the same with technology - can be used for good or for bad.