Kevin, yes, that's exactly what I was trying to say.
I was badly bullied throughout school. Some of my bullies were the "popular" kids, but the ones who treated me the worst were the ones who were *also* bullied by the popular kids. As if treating me like shit would show the popular kids "hey, I'm one of you, so let's all gang up on KC instead."
Personally, I try to be more the way River is describing. Hubby has said to me more than once that with all the abuse and bullying I've dealt with, he can't understand why I'm not the most abusive, cruel bitch in the universe. He's met a lot of people who were abused or bullied and turned around to inflict that treatment on others, either because they were hurting and so wanted other people to hurt as well, or because they wanted to be accepted.
My response the times he's said that is "Why would I be like that? I know how it feels to be on the receiving end. It feels like shit. Why would I want anyone else to feel that way?"
But like Hubby, I've known a lot of people who do choose to inflict pain on others because it's been inflicted on them. My kids' uncle, who was beaten with a belt growing up and so did the same to his kids because "it happened to me and I grew up okay." (He's an alcoholic whose wife chronically cheats on him, and whose 20-year-old barely speaks to him anymore.) My kids' father, who grew up in the same household and, while he wasn't physically abusive to our kids, because I told him I would have him arrested if he were, was extremely emotionally and verbally abusive to me and Alt. "Betty," the woman Hubby hooked up with years ago, who was physically and emotionally abused growing up and was kicked out of her home at age 18--with a newborn--and treated her own kids that way to the extent that both kids, now adults, are drug addicts (though one is recovering). She's also attempted to systematically gaslight and emotionally destroy people she doesn't like or who she believes have wronged her--me included, and don't even get me started on what she did to Best Friend.
Unfortunately, in human life, there seems to be a pecking order. Those at the top peck at those on the next rung, who peck at those on the rung below them, and so on. It's very rare even for those who are on the same rung to try to support each other, because so many are trying to peck their way to the top.