I can relate to this, though maybe not in the way intended.

I don't remember when it occurred to me, but sooner or later I realized I was as often (if not more so) the "bully" as the "bullied" in various situations. Especially factoring in that I was often taller or bigger and almost always fatter than everyone else. I also realized that I was more than a little too fond of being seen as knowledgeable and/or correct.

I'm not even making excuses for the times I bullied people, because I'm not counting the unintentional ones. Again, this is why I relate. There were times I felt (if not actually was) the one on the outside, trying to find a place where I belonged. There were times when I was (in some capacity) the "aggressor" who drove other people away from something I was supposed to be trying to draw them towards.