Regardless of who he was targeting, why was a person who in 2008 had stabbed a policeman and his dog wandering freely round ? I see that his custodial sentence back then was just “to be released if he is no longer considered a danger to the public”. Well, someone considered wrong, didn’t they? Because he was a horrible danger to the public.
I’m sure like most people I’m sick of “lessons will be learned” as dangerous individuals are allowed to roam the streets - like the murderer of three in Nottingham. I’m also sick of people saying it’s money/in-patient beds etc - no. Just remove these people from the public sphere. Of course you can’t predict future violent actions in a previously non-violent person, but in the case of the Golders Green man surely stabbing a policeman and his dog means that he should not have been free less than 2O years later.