The assault isn't alleged.
But chances are, if you see a bunch of lanky under 18s, with tracksuits on, faces hidden by masks, lobbing missiles off the roof of the cafe in the park, it's probably the same lot. I'm pretty sure most of them were white, so there was no omission on that front, but I thank you for your generosity in thinking that my bourgeois over-sensitivity would compel me to protect the little scumbags from hurt feelz.
However, if I did provide a detailed description here and if you then thought you'd seen a similar-sounding lot hanging around nearby, I'm not sure how this information would be remotely useful to you. Unless you were planning to confront them and ask them if they were on Peckham Rye last week and then give them a right telling off?
So it was a strange post.