Late last year, when Luigi Mangione was arrested and charged with the murder of United Healthcare CEO Brian Thompson, something unexpected happened: A lot of people praised him for his actions, elevating Mangione to the status of secular saint for gunning down a man in cold blood. Both on social-media platforms, where he was hailed as a folk hero, and in person outside the New York City courthouse where dozens if not hundreds of supporters waved “Free Luigi” signs, a disturbingly large number