well, you have a history of authoritarianism and warrantless detention in many, many European countries, the US is all entirely subject to the US constitution which explicitly forbids warrantless searches, detention absent due process and things like that. It has a few blind spots, and the rules are broken, but generally can be corrected and the culprits prosecuted. Detention in Germany for example without a jury trial and evidence of illegal activity is perfectly legal, as it is in the UK and almost every other European country so long as it protects the general welfare or some other such broad meaningless condition.

I find it funny, you talk about freedom, Europeans will defend their governments as free, shit on the US, defend government power in the name of protecting the public, but then, preemptively jailing people, like previous authoritarian states of Europe would do, and they're all surprised pikachu face. I doubt they'll ever get it, Europeans are lemmings.

Except the French. The French light shit on fire when their government displeases them.