Mangione meticulously tracked Thompson to his hotel, brought a weapon and left a written record of his intent — that's not a loss of self-control; that's a calculated plan. Legal experts are openly skeptical that jurors will accept an emotional disturbance claim. A notebook calling the health care industry "parasitic" and musing about killing a CEO reads far more like premeditation than a psychiatric crisis. Mangione's move reeks of desperation and he shouldn't be lionized for his horrific crime.