What is Walter McMillian's nickname?

Walter McMillian's nickname is "Johnny D." This nickname is significant within the narrative of "Just Mercy" as it reflects not only his identity but also the relationships and perceptions that surround him in his community. The use of a nickname often indicates familiarity and connection, which plays a crucial role in illustrating Walter's character and the injustices he faces. Throughout the book, Bryan Stevenson highlights both Walter's humanity and his struggles against a flawed justice system, and the nickname serves to emphasize his individuality in the face of adversity.

The other options represent names that do not pertain to Walter McMillian, thus not accurately reflecting his identity as presented in the book.