‘Is there something wrong, commander?’ said Feeney.

‘Everything,’ said Vimes.  ‘For one thing, no policeman swears allegiance to the civil power, he swears allegiance to the law.  Oh, politicians can change the law, and if the copper doesn’t like it then he can quit, but while he is in the job it’s up to him to act in accordance with the law as laid down.’  He leaned his back against the stone wall.  ‘You do not swear to obey magistrates!’