It was a hot Friday night in Berlin, and young people on the narrow streets of Kreuzberg district were just beginning their usual 48-hour clubbing routine with cigarettes, beer, and lines of cocaine. Aware that I stood out as a solitary woman and an obvious foreigner, I tried to shove my way through the throngs of smelly teenagers and drunken old men as efficiently as I could, right shoulder angled toward the crowd to get the maximum force-to-surface area ratio.