Every single plastic policeman/woman in England is busy persecuting people who have the audacity to drive a car. They were never intended to do a proper job. Most of them do not even have the ability to fulfil a useful function.
This gentle surf is a metaphor for the way that The Enemy might chose to invade: with no warning and little fanfare. We, unaware of the impending disaster, will be quietly possessed and dominated before we know what is happening. Only by vigilance can we stem the evil tide. Thank you for this sobering reminder of the danger we face.