Since it was first published in 2010, this book has been cited in judicial decisions and has been adopted in campus-wide and community-wide reads; it helped inspire the creation of the Marshall Project and the new $100 million Art for Justice Fund, and it has been the winner of numerous prizes, including the prestigious NAACP Image Award. Most important of all, it has spawned a whole generation of criminal justice reform activists and organizations motivated by Michelle Alexander's unforgettable argument that "we have not ended racial caste in America; we have merely redesigned it." Now, ten years after it was first published, The New Press is proud to issue a tenth-anniversary edition with a new preface by Michelle Alexander that discusses the impact the book has had and the state of the criminal justice reform movement today.