In the German state of Bavaria, dozens of people are in 'preventive detention' because they might otherwise engage in climate protests, specifically around the car industry exposition IAA in Munich.
Apparently possible for a month there...
https://www.zeit.de/gesellschaft/zeitgeschehen/2023-09/letzte-generation-bayern-praeventivhaft-gewahrsam
US does shit like this all the time. Guantanamo bay ring a bell? There are still people there who haven’t been convicted of a crime.
That doesn’t count, those were brown people!