I want policing via consent. A police force that through diligent investigation comes to suspect someone of a crime and then acts on it. Let scene of crime DNA

I want policing via consent. A police force that through diligent investigation comes to suspect someone of a crime and then acts on it. Let scene of crime DNA assist in showing a relation, or that the suspect may be male etc. Yet a DNA database to trawl is the wrong answer. DNA is not a 100% unique match, it might not even be unique among everyone alive right now. It can degrade, techniques for amplifying very small samples are highly delicate and easily corrupted. DNA evidence at trial achieves that same undeserved halo effect as polygraph as the non-mathematical public and jurors don't understand any percentage confidences. It is far, far more influential than it deserves to be, even though unlike polygraph it has a real factual basis. It should be one of multiple sources of evidence sought at trial, and should be barred from being sole grounds to convict. A DNA and fingerprint database of convicted felons, accessible only to police and ports seems a reasonable compromise. A database of the innocent and not yet proven guilty? Fuck right off.