"Bullying remains a big problem, according to the study data. About 76% of violent crimes that occurred at school were not reported to police, which is consistent with the findings that from 2006 to 2010, crimes against youth age 12 to 17 were more likely to go unreported than crimes against persons in other age categories."
Now, here's my question for you, mholt (and others), meant in a kind but very direct tone: why should someone need to prove that reporting more of these crimes is justifiable? Why quibble with that question versus addressing the question of, "is there a wrong being done and can I help stop it?"
There is a wrong being done. You can help stop it.
Have you heard the phrase "don't feed the trolls?" Generally, if someone is saying hurtful things because they didn't know better, raising awareness is likely to help. If they're saying hurtful things to get attention, saying that they're hurting people and should stop is likely to be counterproductive.
I don't know enough to be positive in this case, but I'm guessing this is a case of "trolls", not a case of "ignorant people" (at least not ignorant in the sense of not knowing that they're causing someone distress).