Solitary confinement is classified as torture by the UN and is a war crime under the Geneva Convention, yet more than 500 people have endured this for a decade or longer in Texas. Damascus James created “Texas Letters,” an anthology and book series featuring the unedited writings of people who have spent months, years and sometimes decades in isolation. @TexasObserver has extracts from the second volume here.
https://www.texasobserver.org/texans-trapped-in-solitary-confinement/