 A photo showing the scene in which Peng, wearing a green military uniform, sings to helmeted and rifle-bearing troops seated in rows on Beijing's Tiananmen Square, was swiftly scrubbed from China's Internet before it could generate discussion online.However, the image — seen and shared by outside observers — revived a memory of the leadership's preference to suppress.The image was from the back cover of a 1989 issue of the "People's Liberation Army Pictorial", a publicly available military magazine.