The deranged “manifesto” of Luigi Mangione revealed the image-obsessed accused killer chose to “wack the CEO” of UnitedHealthcare during an investor conference in New York City to generate “headlines” — and had previously planned a bombing “catastrophe,” court documents revealed. Parts of Mangione’s scrawlings in red spiral notebooks were revealed as part of a filing from Manhattan District Attorney Alvin Bragg on Wednesday, giving insight into the thought processes of the 27-year-old who allegedly targeted Brian Thompson, 50, on Dec. 4, 2024, to prove a political point about the health insurance industry, which he wrote “extracts human life force for...