Blek le Rat is a living legend as he is one of the first graffiti artists in a global level and the first that introduced the stencil technique in the scene. We met him in the Wunderkammern art gallery that hosted his solo show "Propaganda" and had the opportunity to chat with him. In this short interview he speaks about what is Propaganda, the reason he chose stencil and , the difference between Street Art and Graffiti.