Good question. She knew he was doing sleepovers but had no proof that there was molestation, so the DA probably wouldn't have been able to do anything unless the kids or parents were willing to testify about it. That was why he targeted immigrants who were unlikely to be willing or able to be good witnesses. He probably got fired because his perversion was becoming too obvious. Also libraries are very woman-controlled ultra-liberal government worker organizations. They coddle criminals. She also told me about black teenage worker who was caught breaking into the coin box of the copy machines. They didn't report him to the police or even fire him, they just politely asked him not to do that again. Now you see why public libraries are thrilled to have drag queens reading to children.

I don't know. This was 25 years ago. My guess is that non-English speaking parents were naive about homos and thought a librarian was a trustworthy educator who would help their kid learn to read. Just like most people used to trust their kid with a teacher, priest or boy scout leader.