Just my bit....
I appreciate the serious nature of the post, and indeed knifes on the streets are a serious issue. Just seeing what Lambeth took off the streets this year makes my stomach turn.
However, having been involved in quite a few incidents in my days, including a rather nasty one locally the other day, mild humour which doesn't directly mock the victim is a great way to deal with the stress of the aftermath.
A little humour doesn't mean you don't care, but does at least show that you are aware. Which is more than can be said for some blinkered folks out there.