Interesting and balanced book.
Interview with the author
https://www.youtube.com/watch?v=eSyb-Ua5ZuA (https://www.youtube.com/watch?v=eSyb-Ua5ZuA)
book
http://www.amazon.com/Enemies-History-FBI-Tim-Weiner/dp/0812979230/ref=sr_1_1?s=books&ie=UTF8&qid=1363104337&sr=1-1&keywords=Enemies%3A+A+History+of+the+FBI (http://www.amazon.com/Enemies-History-FBI-Tim-Weiner/dp/0812979230/ref=sr_1_1?s=books&ie=UTF8&qid=1363104337&sr=1-1&keywords=Enemies%3A+A+History+of+the+FBI)