An injured policeman sits on the ground after he tried to drag away a man who was standing in line to buy Olympic tickets at a ticket office near the National Stadium, also known as the Bird's Nest, in Beijing July 25, 2008. Unwashed, unfed and lacking sleep, thousands of Chinese queued for their last chance at the Olympic tickets on Friday, with police straining to hold back the crowds who threatened to break barricades. REUTERS/David Gray (CHINA) (BEIJING OLYMPICS 2008 PREVIEW)