Data and Goliath: The Hidden Battles to Collect Your Data and Control Your World, by Bruce Schneier. If you work in visualization, infographics, data journalism, analytics, etc., you'll be interested in it.
The book reads as a follow-up to Jaron Lanier's Who Owns the Future?, but it goes deeper into the consequences of a world where the collection, analysis, and usage of data has become widespread. I'm in the middle of it, and I have highlighted at least a couple of lines on every single page. Here you have some reviews:
The New York Times
The Wall Street Journal
Federation of American Scientists