I just ran into a comment that seemed rather personal and angry and was thinking of flagging it but wasn't sure exactly what qualifies as a candidate for flagging. Took a look at the help page but didn't see anything relevant (although I could have missed it).

The comment is clearly an angry "who the heck do you think you are blah blah blah..." no swear words or racism or anything like that, just someone annoyed at someone else's comment.