Hundreds of people gathered outside a federal court building in Manhattan on a weekday morning to attend a plea hearing for Luigi Mangione, a 28-year-old who fatally shot Brian Thompson, the chief executive of UnitedHealthcare, in New York earlier this year. The courtroom drew a diverse crowd, but particularly notable was the presence of a group of young women who have identified themselves as "Mangionistas." Wearing attire more commonly seen at social venues than in a courtroom—such as high heels and miniskirts—they sought to show support for Mangione despite his confession of guilt.

Mangione’s case has polarized public opinion. While he has been widely condemned as a cold-blooded assassin responsible for the death of a married father of two, some have portrayed him as a vigilante responding to grievances with the American healthcare system. His vocal supporters outside the court expressed strong emotional reactions; some dismissed his guilty plea as irrelevant or even suggested it indicated innocence, while others openly stated they stood by him regardless of the verdict.

Inside the courtroom, security personnel strictly enforced access rules, allowing only those on the official list to enter. Observers noted that the atmosphere—marked by impatient crowds and disruptive behavior—contrasts sharply with courtroom decorum typically expected in other judicial systems, including those in Australia. In such contexts, minor infractions like chewing gum or using a phone can result in stern warnings or removal from the proceedings.

The display of public support surrounding Mangione’s trial raises broader questions about the nature of high-profile legal cases and the intersection of crime, public sentiment, and media attention. While fan fervor surrounding defendants is not uncommon, the intensity and style of the "Mangionistas" has drawn particular attention, highlighting the complexities of public perception in cases involving violence against prominent figures.