One of the best things about Britain used to be that the police had no special powers or privileges. Sir Robert Peel's original conception was of people employed to do professionally what any public-spirited citizen might do. The genius of this vision was that citizens need not fear their police. They were just exercising every citizen's rights; fulfilling every citizen's duty. The Jean Charles de Menezes case is clear evidence that we must fear them now. They have been set above us.
If you killed a man on the Tube, believing him (on slight evidence and that contradicted by his being too lightly clad to conceal a bomb) to be a suicide bomber, you would be prosecuted. The police and the CPS would say that it was "for a jury to decide" whether your defence was a good one. The family of the man you killed would expect a trial. Quite rightly, justice would be done and would be seen to be done.
There is no shadow of justice in today's, all too predictable, news. The stark fact is that one set of the State's agents has protected another. So much so, that we do not even know the killers' names. Compare and contrast that with the coverage of alleged crimes committed by those who are not the State's privileged agents. Their names are bandied about for all to remember long after their acquittal.
I do not know that a jury would convict these policemen. I suspect it wouldn't. I don't think the CPS is protecting the killers for their own good. I suspect the objective is to avoid public discussion of the, probably illegal, instructions given by the the Home Office in the wake of the 7/7 bombings.
Of all the dark stories of the New Labour years, this is perhaps the most sinister. I cannot understand why the public is unmoved.