the thin blue line, The blurred blue line

The Economist

The Metropolitan Police responds to a mental-health call every 12 minutes, an increase of a third in five years


ECONOMIST.COM
British police forces are having to do more with less
The blurred blue line*

*可能借用；

the thin blue line

PHRASE

informal 

• Used to refer to the police, typically in the context of maintaining order during unrest.

  ‘the thin blue line holds the frontier between chaos and civilian life, between crime and the American dream’

典故解釋：https://en.wikipedia.org/wiki/Thin_blue_line