Shaka ends the book with a letter to the reader, an afterword that tells the story of how his victim's godmother had hope that he could change. Then he makes an eloquent statement about having hope for every person, even if they've done something wrong.
He invites us, the readers, to be part of changing society and making things right where they're wrong. It's a moving way to end, and it invites us to be part of the project of making things right at the heart of the book. It's pretty insanely inspiring.
And on top of that, it's a really great move for Shaka to make as a writer. This is a book about Shaka's own personal transformation, and it's riveting enough just for that reason. But Shaka is looking to go even bigger than that. He's not just interested in his own comeback story—he's interested in other people getting a similar chance at transformation. And he's saying that's not just an individual question: it's a question all of American society faces.
Talk about big stakes.
And here's the coolest part: Shaka's inviting us, the readers, into that project. He's saying we can all be part of transforming society.