The public and the media were on an anti terrorist witch hunt whipping up emotion and fear until everyone with a backpack and a suntan was suspect.
The police are damned if they do and damned if they don't someone will always say they were wrong MP's, media,public, civil rights. You name it they are all lining up to throw in their opinion.
Bear in mind even in this inquest not all information will be revealed there will be a D notice on some stuff and some will fall under the Official secrets act... So just wait 50 or 100 years until it becomes public.. then we will know all the facts.