The new wave of graffiti isn’t about spray paint or tagging – it’s about public performance and intervention, as Urban Interventions by Gestalten shows. Pieces subvert what we expect of our public space, and what we expect of society. It’s all about surprising people and making them think a little harder, and shake them out of their daily routines. If that involves dressing up like a Swedish general and hitchhiking a ride, or dressing up in a mass of Ikea bags and walking around an Ikea, then so be it. Urban Interventions is available now.