Arguably everyone is indoctrinated by the culture they were brought up in, to some degree. This is normal and not necessarily something to be afraid of.
It can go too far, though. Living in China i met a lot of people who were strongly indoctrinated to see the world a certain way due to the overbearing influence of government propaganda in the schools and the media. It was almost impossible to get them to see outside the box on certain issues, and i found that sad. It's not just dictatorships that do this. When American kids are made to say the Pledge of Allegiance at school - while not directly comparable - i also find that a creepy form of patriotic indoctrination.
I presume you are more interested in indoctrination on a smaller level, though, perhaps religion or class based? In that case you might enjoy books by people who escaped cults or very strict religious sects (it's virtually a whole genre on its own these days). I have a few friends who left behind their religious background (ex-Mennonite, ex-JW) and they do find some comfort in reading those books.
