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
They want protestors to be quiet and in the distance. God forbid they inconvenience people to get their voices heard
Sadly the US is exactly the same, and even demands permits for protest. But we’re teh freeeeeisst evaeva by crackie