Working in the medical department in a correctional facility for over 8 years, I have come in contact with people who have committed terrible crimes. When I worked at the state prison, it was a moderate/minimal security facility. The crimes committed by those at that facility didn't usually include murder.
When I was offered the job working at our local jail I realized I would be working with people with very serious crimes including first degree murder. They would be housed in our jail waiting for trial and those trials can take many years to adjudicate.
Not always but most of the time, I am aware of what the inmate I am treating is in jail for. I feel I need to know. It is a valuable part of my total assessment of my patient. I do recognize that until they are convicted, they are innocent until proven guilty. Even then their innocence/guilt may be only as valid as the competence of their attorney. Having that information, I do not let it influence how I treat the inmate. I treat them as a fellow human being and give the best of what I have to offer.
Some of the crimes alleged of some of the inmates I treat are very gruesome. What is interesting is that I don't usually see the evil that must have been present at the time the crime was committed. Most seem just like you or me. I may see a little evil here and again but it is not usually in those who have been charged with horrible crimes.
It all makes me wonder if maybe all of us have some evil in us but most of us can keep it in check. Desperation, drugs or mental illness may be what opens the door. My job in corrections gives me lots to ponder about. I have thought of so many research projects that need to be done. Some I wish I could even participate in but I already have my hands full.