Philip Oltermann: On Monday 3 November 1986, a group of five masked men drew a white line on the Berlin wall. The line started at Mariannenplatz in the capital’s alternative Kreuzberg district, heading west via the Checkpoint Charlie border crossing in the city centre. At points, the line was so thick the paint dripped all … Continue reading A line in history: the east German punks behind the Berlin Wall’s most radical art stunt