This was all lies spin put out by the Met immediately after the event. It later transpired that he got as far as walking onto the train and sat down unchallenged by anyone.He didnt run, he didnt vault a ticket barrier - he had no idea anyone was even following him It was when he saw a group of (ununiformed) men walking onto the train and looking/pointing at him, that he, approached them to ask if there was a problem.
At this point 5 of the men held him face down on the floor while the sixth pumped 7 bullets into his head at point blank range at interval of approx 3 seconds.This happened in full view of a carriage full of passengers. And he wasnt carrying a backpack or wearing padded clothing in warm summer weather either. That was also a lie put out by the Met press office. It was an unfortunate coincidence that apparently the cctv cameras in the station werent able to provide any "useful footage" of events. 
It was an execution,no other phrase to describe it imo.
If the officers were ordered to do this, whoever gave the order should have been charged with murder. If they werent ordered to do it, the bloke with his finger on the trigger should have been charged with murder.
And the Met apparently havent just been issued with dumdums, as from what I have read they used them on him.
http://en.wikipedia.org/wiki/Death_of_Jean_Charles_de_Menezes
http://www.guardian.co.uk/uk/2005/aug/17/july7.menezes
http://www.thisislondon.co.uk/standard/article-23657459-menezes-coroner-attacks-scotland-yard-flaws-over-shooting.do
http://www.sepiamutiny.com/sepia/archives/002048.html
A police force which can carry out an operation as farcical and tragic as this, and then try to cover it up with a blanket of lies, shouldnt be allowed the responsibilty of roaming our capital city with guns loaded with dumdums. Imo they lost the right to be allowed such responsibility in Stockwell tube station, and the events which occured after the event.
Yes I agree with the majority that.
There was a systemic failure in how this operation was mounted and executed - from the top down.
However, easier to judge with hindsight but less so when a dynamic situation is quickly unfolding in the aftermath of terrorist 'suicide' bombings in similar surroundings to where the culmination of this police action took place.
This is an example of the burden placed on those who are expected to carry out such duties, manage such operations and plan strategically for such eventualities - but I hold the view, and had always held it, that we should never do the terrorists work for them, either by adopting oppressive measures in our everyday activity when interacting with the public, or killing or injuring innocent people.
I personally found the activities of certain people, not only within the Met’s command structure but also in other agencies, to have been regrettable and of concern - but then it didn’t surprise me in the least, as it has been clear for some time that command within the Met has been open to undue political influence.
It would be irresponsible for the authorities not to place such resources on the streets to combat those who wish to do our people harm but we, as a lawful body, should not behave in such a way – by design or incompetence – to hurt those we are sworn to protect.