I can't like this post enough.
I have seen this on a smaller scale with younger people. Pre-teen (transition age) and younger. My experience is limited, but I've had some children stand out, but one in particular. I was working in private school situation for children with special needs. The majority of the children had downs, MR, non verbal autism, cp. Some behaviors but nothing that schedules, boundaries and calm setting couldn't overcome. I'll never be certain how it happened (but I assume it was misplaced and naive "compassion), but we accepted a child (9) who had been expelled from 2 other schools. He had some DXs (that I don't believe were compatible with the children who were enrolled). But.. he was enrolled. Long story short, this kid could smell weakness from a mile away. He would pinch, trip, etc children who were vulnerable. He understood he could get away with doing things to those who couldn't speak and he was also adept at picking the perfect opportunity and moment when adults were distracted. He was also very physically affectionate. Uncomfortably so. The principal and psych did not want to hear any of it. They took this child under the proverbial wing. They were going to save him. He didn't last long and his tenure there ended up with him stomping another non verbal boy who had autism and CP. The boy who was stomped spent 3 days in the hospital.
I found out later that this child was sexually abused by his siblings while his mother partied. A few years after the above incidents, he placed his infant brother in an outdoor public trash can because he was tired of
hearing him cry. That culminated in him being institutionalized until 18 (which is coming up shortly). Heaven help us all.
Sometimes things are too "wrong". Sometimes, it's too late. Sometimes, a person is too damaged. And sometimes people naively try to "save" these extremely damaged people instead of protecting those innocents around them.
Imho.