Sin Wai-keung, 52, newspaper editor and former news photographer, poses in front of a projection of a photograph he took in Beijing in 1989, in Hong Kong May 22, 2014. Sin's photo shows a man standing in front of a column of tanks in Beijing on the morning of June 5, 1989. Recalling the moment he took the photo, Sin said, "Most important, it got photographed. I didn't think about the danger, or whether it would become an iconic image, as the news was still going on." Sin further said, "I believe there will be more important images on June 4th to surface in the future which fully describe the event." Bobby Yip/Reuters