Berlin is no stranger to ‘cross-cultural exchange’. An historical “hub” between Eastern and Western Europe, immigrants have been steadily arriving for over 800 years.   You could say the city was built on it.   Something former mayor Klaus Wowereit was supremely aware of when in 2003 he proudly proclaimed the German capital “poor but sexy” to the entire world.   Perhaps ‘crass’ in the eyes of some, “Wowi” was not only hoping to encourage economic immigrants (ie big business, tech start ups and the eventual “roamer workforce”) to set up shop and part with their cash in his “impoverished” city. Simultaneously he renewed and acknowledged Berlin’s longstanding historic commitment to welcoming cultural and creative migrants as well.   Artists, performers, thinkers, writers, poets,…