If, as I do, you spend half your year in southern California, The Shield is unmissable because it depicts, so precisely, that peculiarly brutal Los Angeles code of police enforcement (elsewhere depicted in the current hit film, Dark Blue). The LAPD, despite its motto ("Serve and Protect"), believes that society's best defence against the bad guys is assault. Kick first, question later. It's a creed that it inherited from its patriarch, Chief William H Parker, in the 1940s. It was tested to destruction in the Rodney King riots, but lives on in the trials of Curtis "Lemonhead" Lemansky. Is he a criminal or a crime-fighter? Is George W Bush - with his preemptive strikes against terror - the saviour of Western civilisation or a war criminal?