OUR COMMON GROUND Voice, Matt Taibbi, author of "The Divide," tells Salon about Geithner’s excuses, Piketty’s success and Nixon’s cronies.

His relentless coverage of Wall Street malfeasance turned him into one of the most influential journalists of his generation, but in his new book, “The Divide: American Injustice in the Age of the Wealth Gap,” Matt Taibbi takes a close and dispiriting look at how inequality and government dysfunction have created a two-tiered justice system in which most Americans are guilty until proven innocent, while a select few operate with no accountability whatsoever.