I was not aware of disagreeing with you in any way - what I said was in support of what you said, that the police had been wrong and been found out to be wrong in that case, that there was a need for better training and procedures in police work involving firearms and that without these the police are more of a danger because a firearm in the hands of an untrained user is a liability rather than an asset.
I also think that the level of paranoia created by terrorism the past few years is excessive (and may be fuelled somewhat by government agendas such as pursuing an ID card scheme which would not stop terrorism because terrorists can easily get ID and suicide bombers will, by definition, never have 'previous' on their records) and is what is leading to incidents like the tube shooting. It is too easy to create a situation where terror and panic leads to accidents and if we allow the situation with the various middle eastern terrorists to let this to happen then they have won because they have done what they set out to do - created terror.