If you have read any of the anonymous blogs by those on the Job, they almost always tell you to either keep your mouth shut or say as little as possible ─ this was the wisdom imparted by 'Nightjack' before he got outed and had to delete his blog, subsequently going on to win accolades and the Orwell Prize.[1]
https://web.archive.org/web/20090426201221/http://nightjack....
Everywhere in the world the police are your enemy. They exist as the manifestation of a state's domestic violence.
When they're talking to you, they're your enemy.
Fun fact: because of their French (and to a lesser degree, Spanish) influence, Louisiana's laws still follow a civil law system.
[1] https://www.apprendre-le-droit.fr/anglais-juridique/what-is-...
[0]https://en.m.wikipedia.org/wiki/List_of_U.S._states_by_incar...
Louisiana is one of the poorest states in the country and has one of the highest contracted private prison quotas in the country (96% occupancy).[1] And until recently, Louisiana had some of the harshest mandatory minimum drug sentencing requirements.[2] They still have harsh mandatory minimums for other offenses. If you're looking for an explanation for Louisiana's criminal justice issues those factors are the far more likely explanations than the existence of a civil law system.
[1] https://en.m.wikipedia.org/wiki/Louisiana_Department_of_Publ...
[2] https://www.pewtrusts.org/-/media/assets/2018/03/pspp_louisi...
In Europe in particular, police officers are not such an enemy.
Also, in UK, refusing to talk to police at first contact can be used against you, for example it will be more difficult later to introduce exculpatory evidence that you were supposed to know of at the time you refused to speak.
https://en.wikipedia.org/wiki/Right_to_silence_in_England_an...