It speaks volumes that many of us are no longer surprised at police racism and corruption - but we can still be surprised at their crass stupidity in so readily exposing themselves.
The harassment of the Steven Lawrence campaign, the knee-jerk lying after the shooting Jean Charles DeMenzes, the insensitivity to the family after the shooting of Mark Duggan, even the farcical cover-up following 'pleb-gate' - the Metropolitan Police time and time again demonstrate a staggering inability to learn from their mistakes.
So why following a prolonged and highly publicized miscarriage of justice that wrongly imprisoned three young men almost thirty years ago over the killing of PC Blakelock in Tottenham - did they think they would have another go?
From the start the trial of Nicky Jacobs was a farce. Three witness who the police freely admitted had been offered immunity, paid and 'looked after'. A witness apparently borrowed from the cast of a bad 70's sitcom who actually said under oath that he thought 'all Black men looked the same'. And another witness who confidently gave an account of the murder in completely the wrong part of the Broadwater Farm estate. And all of this after god-knows-how-much preparation and grooming on the part of the police, at god-knows-how-much cost to the public.
And by the way, the people of Tottenham who have now been given another legitimate reason to distrust the police are also a part of this 'public'.