domino will be unique. And that's where the pupils at Heinrich Schliemann secondary school come in. They're helping to paint some of the dominoes. Students like 13-year-old Emilia can't imagine what it would be like to live in a divided city. [Emilia, Student]: "To be honest, I wouldn't be able to see half of my family anymore. And if I lived in the east, I'd be really afraid. It was really tough with the Stasi secret police, as you wouldn't be able to trust people and couldn't speak ...