The Society's leadership from the 1920s-1940s was closely tied with the American and British Red Cross societies, the Kuomintang government and the Shanghai business community.

[–] pfried@reddthat.com -3 points 2 hours ago* (last edited 1 hour ago)

Took me all of 1 second to realize that the massacre happened after the 1940s.

Then it took me all of an additional minute to read what happened after the 1940s in the Wikipedia article:

"The Chinese Communist Party re-organized the Red Cross organization in Beijing and was admitted to the International Federation in 1950."