"Another tendency which is extremely natural to democratic nations and extremely dangerous is that which leads them to despise and undervalue the rights of private persons." (Alexis de Tocqueville)
There was a time when it could almost be accepted that the police might, every now and then, listen to your phone conversations without a warrant while investigating a crime. At least, we said to ourselves, it will be inadmissible in court a court of law. Now, of course, the evidence will not be used against you in a court of law. It will determine your location in the "disposition matrix", according to which you will be held, or just killed, without trial.