That is some shaky ground. I think there are situations where it would be best to either talk to the individual who is doing something hurtful, or say nothing at all, or tell someone who has the “need to know” clearance and can be trusted to keep the info to themselves. To me, it all depends on the details of the situation as to what to do. Such as, is the situation medical or emotional, is it professional or casual, is it someone under your authority or not…I guess ultimately, if someone is in trouble, we should try to help as we would want to be helped.