Stephen Slevin, who spent more than 22 months in solitary confinement despite not being convicted of a crime, is seen here in Dona Ana County Sheriff's Department photos, before and after his time in solitary. AP hide caption

itoggle caption AP

Derrin Yellow Robe, 3, stands in his great-grandparents' backyard on the Crow Creek Reservation in South Dakota. He was taken off the reservation by South Dakota's Department of Social Services in July 2009 and spent a year and a half in foster care before being returned to his family. John Poole/NPR hide caption

itoggle caption John Poole/NPR

Sometimes referred to as "The Rock," Alcatraz Island on San Francisco Bay in California served as a lighthouse, then a military fortification, and then a federal prison until 1972, when it became a national recreation area. Now the island is open to tours. Gabriel Bouys/AFP/Getty Images hide caption

itoggle caption Gabriel Bouys/AFP/Getty Images

The Karnes County Civil Detention Center in Texas has outdoor spaces and other features meant to make immigrant detention less like prison. It will house mostly low-risk, nonviolent offenders. Laura Sullivan/NPR hide caption

itoggle caption Laura Sullivan/NPR

The high-profile case of Troy Davis sparked national debate on the death penalty. Richard Dieter, executive director of the Death Penalty Information Center, says there's growing discontent among Americans about capital punishment. David Tulis/AP hide caption

itoggle caption David Tulis/AP