Rage Against the Machine frontman Zack de la Rocha performing alongside Dave Grohl in 1994.The newly-resurfaced clip was filmed during a one-off reunion set by Grohl’s old band Scream, which took place at Hollywood’s Dragonfly Club.Joining the band for a furious rendition of ‘Human Behaviour’, de la Rocha is seen letting loose in the energetic clip as he stalks the stage and joins Scream’s Peter Stahl on vocals.Grohl, meanwhile, assumes his position on drums – a role he previously held in the DC