There’s a lot we could say about the Defenders of the Faith show in Brixton. We could mention Five Finger Death Punch’s use of nu-metal poses to start a mosh pit before 7pm. Or how Unearth rattle through more chest-thumping riffs in a 30 minute set than some bands do in their entire careers. Or maybe how Dimmu Borgir should really start crediting their smoke machine as the seventh member of the band. But really, Sunday night in Brixton was all about one band – Lamb of God.