Nathan Harris from the White City estate was found guilty this week of the killing of Craig Brown.
He will be sentenced on monday.
Just before this murder I came back from Liberia in west Africa, which is a country that for the last few decades has endured one of the worlds' most vicious and brutal civil wars even by African standards.
This is a place where kids frequently use extreme violence as a way of life.
And as I said at the time, when you consider the fact that so called 'hard' kids here, who by comparison live a life of absolute luxury, use this sort of violence over an issue we now know to be so trivial as a previous fight is depresing beyond belief.