“Capitalism is armed robbery,” writes graffiti on the subway wall. “But in Berlin, German capitalists are doing what capitalism is best at creating new jobs and new industries.” “Berlin was seen as poor but sexy,” said Klaus Wowereit, former mayor of Berlin, but last year, German capital boasted the country’s top growth of 2.7%, more than the national average of 0.7%. A city, shanty town and bombsites have become a city of high-tech start-ups, and now technology giants such as Google and Microsoft are. Cheap rents and boisterous nightlife attract clever millennials from all over the world. Unemployment has fallen …