https://www.bing.com/images/search?q=tank%20man%20china
(For those who don't see results, this is my screen grab of the above at 18:12 UTC : https://imgur.com/a/3tzPV49)
Also, "Tiananmen Square massacre" still returns some image results:
https://www.bing.com/images/search?q=Tiananmen+Square+massac...
Therefore, the tweak for "tank man" doesn't seem to make any sense since all the other phrases to get to the same sensitive topic are not suppressed.
It's surprising and shameful to me that Microsoft would be censoring so brazenly even in US search results. Also embarrassing on a technical level that their censorship is this bad. It's also pretty bad at image search compared to Google (compare Google Images "tank guy" to Bing's).
Companies that sell their soul for money are one thing, but Bing has ~2% market share in China, and for this they are crudely censoring search results worldwide? Madness.
Historically, China doesn't provide a list of banned terms themselves, and companies have to reverse-engineer the list of prohibited terms. Likely Bing has a list of the most obvious terms, as recommended by their lawyers.
A lot of people say China's internet censorship doesn't matter because it's mainly/just within their own borders, and anyone in China can and does just use a VPN to get outside. While the latter might be true, it misses the point - China is doing a great job of making self-censorship about a number of their sensitive topics a global phenomenon.
(I did some searching.) This is from a report here:
https://www.msn.com/en-gb/news/world/microsoft-bing-raises-c...
Of course, the search result is an MSN link.
Also, the misspelled version of Tianenmen that I first used worked as well.