Sir Ian Blair states the blindingly obvious

Sir Ian Blair offers reflections about the Jean Charles de Menezes killing:

If, as they thought, the officers were dealing with a suicide bomber, they would have deserved the George medal. Instead, tragically for the de Menezes family and for them, they live with the killing of an innocent man.

-A somewhat earth-shattering statement of the blindingly obvious. Surely the whole point of the police force is for them to catch criminals, not innocent people, is it not? That's the trick isn't it? That's their job and it is why Blair and his colleagues were highly trained and rewarded from public funds over many years.