// knife crime in London is a 'Black' problem and the Black community must accept an increased police presence in their areas //
There is a disproportionate high rate of black people commiting, and being the victim of knife attacks in London.
But over 50% of knife crime involves white attackers and victims. So to dismiss it as a black problem is incorrect.
In 2009 (the last full year of a Labour Government, there were 88,000 stop and searches in London. Last year with thousands less police officers at its disposal, the Met made less than 20,000 Stop & Searches.
https://ichef.bbci.co.uk/news/660/cpsprodpb/E308/production/_99702185_chart-knives_stopsearch-8b83i-nc.png
And nationally, knife crime is up slightly more at 22% in England and Wales. So the reason for the increase is likely to be the same everywhere, not just because the capital has more black people.