O2 Arena, London, November 8
THE lights dim and, after support sets from Tanna Leone and Baby Keem, the audience at the madly cavernous O2 is at fever pitch. It’s a wonderfully diverse crowd: teenage white kids moshing; older black guys nodding, ready to follow the intricate flow word-for-word; women decked out in their finery, dancing ecstatically. The screen to the side of