Berlin protesters swim in Spree to push for lifting 1925 banbr br Hundreds of people leapt into the Spree River’s calm, green-tinged waters in Berlin’s historic Mitte district on Tuesday, aiming to show it is both clean and enjoyable for swimming. br br READ MORE : br Let the pictures do the talking: subscribe to No Comment br br No Comment is brought to you by euronews, the most watched news channel in Europe.