@kev perhaps, but personally I have my doubts. Especially since this was on the anniversary of the Tiananmen Square Massacre.
After you bring it up, I can't discount that Bing's algorithm simply doesn't recognise it. However, given how iconic the "tank man" image is, I find it a bit harder to believe.
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.