A former neo-Nazi and a group of anti-extremism activists in Germany have found an unusual way to disrupt the far right: trademark law. By taking control of brands and coded symbols used to market extremist merchandise, they're targeting a business worth millions and forcing sellers to take products offline. It's a small but inventive act of resistance, one that raises a bigger question: what happens when the fight against extremism shifts from the streets to the marketplace?

For more episodes from Arts Unveiled, follow this link.