Dave Grohl joins Prophets Of Rage on stage

Rocker Dave Grohl stunned concert-goers in Toronto, Canada by joining Prophets of Rage onstage for a surprise appearance.

The band, made up of members of Public Enemy, Cypress Hill, and Rage Against the Machine, was closing out its show at the Molson Canadian Amphitheatre when the stars welcomed the Foo Fighters singer to the stage.

Grohl joined frontman Tom Morello and co. To belt out a cover of The MC5's classic protest song Kick Out The Jams for their final encore.