The excellent magazine n+1 released a small book last year called "The Trouble Is The Banks: Letters to Wall Street". The book is composed of letters written to the officers and operators of big Wall Street firms by people who have been the victims of their unscrupulous predatory behavior. The magazine recently hosted a reading of some of the letters from the book at St. Mark's Bookshop in NYC, and they've posted some audio clips of people reading the letters here. The letters are poignant, enraged, and often hilarious.
(Image above by Alex Schaefer, who's done a whole series of great rage-fueled paintings of burning banks)