Picture by FuchsblogFunny, I passed by that scene on Kastanienallee yesterday as well but only managed to take a crappy picture with my mobile.
Fortunately, these guys documented it: A whole bunch of people sitting on the tramway rails, enjoying the mild night and occupying public space. Feels a little mediterranean, I must say..
By the way, the cool film festival crew SHORT SHOTS is looking for people to support them in Berlin and Madrid!