Luigi Mangione is facing ongoing court proceedings in Manhattan for the alleged murder of Brian Thompson, CEO of UnitedHealthcare, who was shot outside a Hilton Hotel.Evidence debated in court includes a firearm found during Mangione's arrest, police body camera footage of Thompson's resuscitation, and written plans targeting healthcare executives.Prosecutors are seeking a life sentence, with federal prosecutors weighing the death penalty, while Mangione maintains a not guilty plea and his defense fund has exceeded $1.3 million.