Naomi - I think that hits the spot.
I for one would not wish the police to solely carry the blame for this tragedy, when clearly other factors were in play, over which they had little if any control. As far as errors made, they are just that, errors.
But in respect of the cover-up and subsequent perjury that has taken place - then the individuals involved must be brought to trail and if found guilty, punished accordingly.
That is not 'police bashing' - that is even-handed application of the law.