I had a very good professor in college who had a lot of experience in this area. He said you could be working alongside a psychopath (who hates you) for years are not know it. Some of them are so good at faking it.
Psychopathy is just a psychological condition. It’s not a designation of badness or evil. They just can’t empathize. The majority of them are perfectly law abiding and harmless, and they might do many good works in their life.
They just don’t have the brain structure or chemicals to empathize with you.
Absolutely true. Sadly, we live in a world of lies and duplicity that expressly hides the truth in order to protect these people because the syndicates only run because of them.
Adults who refuse to face the truth then lie to children instead of in the past where people would call it like it was. Grimm's Fairy Tales, for example, are horrific but are meant to warn children of the truth about sick and evil people.
The definitive study of the pathology of the psychopath/sociopath is “The mask of sanity” by Dr. Hervey Cleckley; his thesis was that the psychopath/sociopath wear a “mask of sanity” to cover up the underlying pathology, hence the title.