I'm no expert in this, I just have a mild interest and it's really the boundary between the subcultures.

I don't understand how banksy would be cashing in on hiphop culture? I just see him as an artist using a wall as his canvas, I wasn't aware that was reserved for those with a hiphop lifestyle. Was it maybe the "this is my new york accent" piece that draws the association?

Also how do they know he hasn't lives a hiphop lifestyle? I think the same thing exists in London, I have a few co-workers there who seem at least partially attached to it.