For a program that is famous for sensationalising rape, murder, domestic violence, poverty, organised crime, prostitution and drug abuse in order to boost ratings to now expect praise because they have jumped on the knife crime bandwagon is at best misjudged and at worst, repugnant.
I'm afraid I switched it off after 15 mins. I only watched it on catch up after looking at this thread after not seeing it since about 1990. I can see what they were trying to do but it was very clumsily done. Landmark television? Uhm no, it wasn't.