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Luigi Mangione’s alleged diary entries reveal motive for killing CEO Brian Thompson

New York State prosecutors just released what they say are diary entries made by accused murder Luigi Mangione in the months leading up to the killing of UnitedHealthcare CEO Brian Thompson. This as Mangione's defense team files a motion earlier this week claiming authorities “have already prejudiced Mr. Mangione in the media more than virtually any defendant in recent memory.” NBC News’ Sam Brock reports on the stunning new details.