Angry at how fuckwitted some people are.

I'm feeling angry right now.

An innocent man, Jean Charles de Meneze, was shot dead by the police on the London Tube.

I'm not angry at the police for shooting him five times in the head at point blank range.

I'm not angry at him for running away from the police when they challenged him, thus confirming (in their eyes) the suspicion that it was actually a suicide bomber they were tailing.

I'm angry at the fuckers who are bandying around the word 'murder' to describe what happened on that train.

If a terrorist was spraying machine gun rounds at a crowd of people, and the police shot him, would that be murder?

Here the police had (or believed they had) a terrorist about to detonate a bomb on the London Underground, two weeks after over 50 people were murdered in exactly the same fashion, the day after four more suicide bombs failed to go off (hey, that's eight in two weeks guys, even Israel gets a little concerned at a rate like that). A police officer fired shots intended to destroy the 'suicide bomber's brain to prevent a detonation.

That officer was preventing mass murder, not committing a murder.

He and his colleagues made a dreadful mistake. That doesn't make them murderers.