User blog comment:P進大好きbot/Images without Copyright/@comment-3427444-20200131171829/@comment-35470197-20200201094915

Of course, we can put the fairuse tag if it is obviously applicable. (But generally, it is not so easy to guess whether pictures is actually under fairuse or not.) For example, I think that unlicensed pictures for the purpose of trolling are not under fairuse. Also, as you stated, even if it is under fairuse, we need to clarify the citation. Therefore putting the fairuse tag just gives an additional information, and does not help us to ignore the license information.