Swiss artist Thomas Hirschhorn discusses what it means to be an artist, and why art is a tool to confront the times in which we’re living.

His sculpture Drift Topography 2003 in Tate's collection is made up of cardboard cutouts of US soldiers surrounding a ramshackle city whose streets are lined with petrol cans, raising the spectre of the Iraq war.

His exhibition at the Stephen Friedman gallery, London, in 2007extended the theme.