Brian Nelson, left, who spent 23 years in solitary confinement, speaks about his time in solitary confinement on June 24, 2015, during a press conference regarding the class action lawsuit filed on behalf of prisoners against the Illinois Department of Corrections for its overuse and misuse of solitary confinement in Illinois prisons in Chicago. Center is Mark Neiweem, who spent 5 months in solitary confinement, and Latonia Walker who has a brother in solitary confinement. (Antonio Perez/Chicago Tribune/TNS)
