Can A Physician Truly Be Objective?

I have recently been working on an article outlining what I believe to be essential characteristics of a physician. One that came to mind the other day was objectivity. Occasionally I am asked to see inmates as patients in our office practice. These visits have a typical routine: the prisoner is escorted by guards through our back entrance and taken directly to an exam room. The guards bring what is usually very scant records regarding the reason for the visit and the patients medical history. What is not part of that record is the reason the patient is in prison. Until this week, that is. Accompanying his medical records was a facesheet with his picture, convicted offense, and term of imprisonment. Without going into detail, this patients crime was horrible in every sense of the word, and one that movies and TV usually describe as one that even fellow prisoners find offensive. I could not unsee this, and as much as I tried to put it out of my mind I found myself thinking about it while I questioned him and examined him. Has anyone else felt this way during an encounter with a patient, and if so how hard has it been to be totally objective when they have such an interaction?