"TBS" is "prison with psychiatric care". It's a bit complex because you first get your punishment (prison term) and then after that additional TBS treatment (until you're "safe to be released", basically).

I'm not claiming this is representative for Europe, or even the rest of the Dutch prisons. However, everything else I've seen over the years from most European countries gave me the impression the average is closer to that than what I've seen/heard from US prisons.

Solitary confinement on its own is already controversial enough, but being pushed in a cell naked and literally nothing to do?! What the actual fuck?!