This question is motivated by an interesting answer to another Academia Meta question.
My question is, if I see "dogpiling" going on, i.e. more and more people are jumping on a bandwagon, ganging up on a user, may I flag the answer? If so, for what reason? Perhaps I could flag it as "not an answer," because it reiterates a previous answer, without adding anything new?
The now famous question about "Should I call out a student who may have behaved in a sexist way?" is not the only situation where I have seen dogpiling. Another recent example would be Am I being a "mean" instructor, denying an extension on a take home exam
I found an example of helpful moderator action which was apparently triggered by some "not an answer" flags. Of course I don't know whether the flags were appropriate, whether they were accepted, etc. I'm just posting this example to further the discussion. (Note, I was mistaken in something I wrote in a comment. In this example, the moderator did not delete the answer. The answer was in fact auto-deleted.)
Here is a link the the answer: https://academia.stackexchange.com/a/81033/32436
The body of the helpful moderator comment below the answer:
This has been flagged by several users as "not an answer". I'm inclined to agree; most of this post is about criticizing the OP's activities on this site, rather than offering an answer to the question. The part of this post that is an answer doesn't add anything over other, better answers that offer the same point of view but more details and explanation. I suggest editing to remove that last part, and elaborating on the first part if you have something to add over the other answers. Otherwise, I recommend deleting this.