The extreme emotional disturbance defense is Mangione's best shot. If jurors accept the argument, a murder conviction becomes manslaughter, slashing potential prison time dramatically. New York law explicitly allows EED claims even when emotions have been building over time rather than erupting in a single moment. This is a well-calculated move by the defense.
Mangione meticulously tracked Thompson to his hotel, brought a weapon and left a written record of his intent — a calculated plan. 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.
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