Microsoft has acknowledged this is in error...[1] (though the error seems to be that censorship meant to just apply to China is being applied everywhere)
[0] https://news.ycombinator.com/item?id=27395635
[1] https://www.vice.com/en/article/qj8v9m/bing-censors-tank-man
That seems worse, honestly, since before it was obvious to anyone something was being censored. Was the "error" that the search was completely blank instead of full of faux-result clutter?