The inquest into the killing of John Charles de Menezes heard today heard the account of one officer who fired a fatal shot.
It is perfectly natural to grant some sympathy to a person who it is assumed is acting to protect human life. Imagining the situation, it is hard to do otherwise.
But that begs the question of whether the same sympathy can be extended in other cases. The murder of Blair Peach, for instance, where the killers were acting out of revenge and political paranoia. And hopefully, the verdict of the Menezes inquest will not repeat the shameful 'misadventure' of the Peach inquest.