Pfr I am sorry your joke was spoilt but others have had sufficient fun with my original title.
I can well understand the reasoning behind the incarceration but the precedent set is very dangerous. The police are already exceeding their powers and should sanity ever return the police will be very reluctant to relinquish any additional assumed powers. UK policing is by consent not diktak. The entire process of additional controls on people is a very grey area. Where does advisory finish and the full weight of the law start? The police cannot be allowed discretionary powers because some will inevitably abuse them. We do not have, or even require, a uniformed gendarmarie or Guardia Civil. Should the police abuse the trust of the public that could rapidly change to the detriment of our society.