It's astonishing that a school guard could sexually harass a female student, and then utterly fail to prevent her death, and still find employment within the district. But that's public schools for you.
School Security Guard Who Didn’t Stop the Parkland Shooter Was Suspended for Sexually Harassing Students - Hit & Run : Reason.com:
This should probably be filed under "Who Shall Guard the Guardians", (Quis custodiet ipsos custodes? )
It's a useful phrase. One which invites the reader to say: "Hmmmmmm ...."