Remember when we all found out Jimmy Inendino had provided information? I think its far more common then and than you think - he started giving info in the 70s on hijacking. We just had no idea bc the FBI protects informants - often after they die.
Of course. The FBI has an obligation too, but also the incentive too, for the simple reason that if they didn't protect identities, potential stool pigeons would run away from them out of a fear of years later being exposed.
