Why is "Bloody Saturday (photograph)" trending?

Wikipedia Overview

Bloody Saturday is a black-and-white photograph taken on 28 August 1937, a few minutes after a Japanese air attack struck civilians during the Battle of Shanghai in the Second Sino-Japanese War. Depicting a Chinese baby crying within the bombed-out ruins of Shanghai South railway station, the photograph became known as a cultural icon demonstrating Japanese wartime atrocities in China. The photograph was widely published, and in less than a month had been seen by more than 136 million viewers. The photographer, Hearst Corporation's H. S. "Newsreel" Wong, also known as Wong Hai-Sheng or Wang Xiaoting, did not discover the identity or even the sex of the injured child, whose mother lay dead nearby. The baby was called Ping Mei. One of the most memorable war photographs ever published, and perhaps the most famous newsreel scene of the 1930s, the image stimulated an outpouring of Western anger against Japanese violence in China. Journalist Harold Isaacs called the iconic image "one of the most successful 'propaganda' pieces of all time".