Germany must show true leadership and set a strong precedent in the EU against the use of mass data retention to fight serious crimes. Mass data retention is one of the most privacy-intrusive instruments that treat everybody as criminals by presumption. It is high time that European governments implement rights-respecting and proportionate solutions in police investigations. Read the open letter EDRi and 12 civil society organisations sent to the German ministers of the Federal Ministry of the Interior to urge them to stop the use of data retention practices in crime investigations.