Mindhunter: Inside the FBI's Elite Serial Crime Unit

by John E. Douglas

Materialism must die or mankind must stop,”

In our research, we discovered that, while few police officers go bad and commit violent crimes, frequently serial offenders had failed in their efforts to join police departments and had taken jobs in related fields, such as security guard or night watchman.

So I will say it again for the record: in my opinion and based on my experience, the mere presence of a mental disorder does not let an offender off the hook. Unless he is completely delusional and does not comprehend his actions in the real world, he chooses whether or not to hurt someone else.