He calls himself Bill, though it goes without saying that it's not his real name. And he doesn't want any photos taken of his face. He is, after all, a left-wing extremist.
We are standing next to Kottbusser Tor metro station in Berlin's Kreuzberg district, in a trash-strewn square in the shadow of an elevated section of the subway. If things go as Bill and the rest of the German capital expects, stones and bottles will be flying here in a few days' time as part of the city's annual May 1...Full Story