Rights when dealing with authority

Knowing the basics.

Common protections

Most systems provide a right to be told why you are detained, a right to legal advice, and a right not to incriminate yourself. Exact rules vary sharply by country.

Being polite and asking whether you are free to leave is usually wise.
Ask for advice before answering questions in a serious matter.

Data rights

Under regimes such as the GDPR you can generally ask what personal data an organisation holds, have errors corrected, and object to some uses of it.