In Terry Pratchett's Snuff (2011), frequently recurring major character Commander Samuel Vimes, the head of Ankh-Morpork's city watch, is forced to go on vacation to the country, where he discovers crimes anyway. Major themes include racism, drug legislation, class struggle, the gap between law and justice, and the importance of art. Warning: this post contains fuzzy thematic spoilers for Snuff.
The first three, which are all very early in the book, come from a quote-rich conversation between Lord Vetinari and his clerk, Drumknott.
After that, they move out of Vetinari's office and into the larger context of the book:
This next one seems particularly pertinent in light of the NSA spying that it turns out is happening to everybody, everywhere, now:
Snuff, by Terry Pratchett: [Amazon], [Barnes & Noble]