I suspect he is exaggerating just a bit. For if that many inmates were being tossed off buildings and killed by the guards, there would eventually be a record of it. Yes, I’m sure there are some deaths in which the cause is covered up by the guards and paid-off medical officials, but deaths do have to be reported and family members notified.
However, the beatings of child molesters by other inmates has long been known. Even the most hardened gang member or drug trafficker has child family members, and they do not look kindly on those that harm children.
I’ve heard of inmates falling down stairs and getting banged up after which the accompanying guards swore they had slipped.
That has happened in WV when prisoners don’t hear and respond well to commands.