This is one of the best documentaries I’ve ever seen and is available on google video. It is called “Century of the Self” and it’s a real eye opener. Do yourself a favour and make the time to watch it 🙂
As it is 4 episodes of 1h each, you need to set aside 4h. Take notes if you can, and research further.
It is all hosted in archive.org and you can view it online