Paul Butler was an ambitious federal prosecutor, a Harvard Law grad who gave up his corporate law salary to fight the good fight - until one day he was arrested on the street and charged with a crime he didn't commit. The Volokh Conspiracy calls Butler's account of his trial ''the most riveting first chapter I have ever read.'' In a book Harvard Law professor Charles Ogletree calls ''a must read,'' Butler looks at places where ordinary citizens meet the justice system - as jurors, witnesses, and in encounters with the police - and explores what ''doing the right thing'' means in a corrupt system. Since Let's Get Free's publication, Butler has become the go-to person for commentary on criminal justice and race relations: he appeared on ABC News, Good Morning America, and Fox News, published op-eds in the New York Times, and other national papers, and is in demand to speak across the country. The paperback edition brings Butler's groundbreaking and highly controversial arguments - jury nullification (voting ''not guilty'' in drug cases as a form of protest), just saying ''no'' when the police request your permission to search, and refusing to work inside the system as a snitch or a prosecutor - to a whole new audience.