Greenpeace activist outside the Russian Embassy in Hamburg, Germany holds a sign with “Reverse Graffiti’ that says: 'Lasst unsere Aktivisten frei! ("Free our Activists"). The activity is in support of the 28 Greenpeace International activists, as well as a freelance photographer and videographer who are currently held in custody following a peaceful protest on September 18, 2013 against risky oil drilling in the Arctic by Gazprom.