Luigi Mangione was arraigned on state murder charges in New York City on Monday, where he pleaded not guilty. During his first court appearance, Mangione's lawyer went viral for calling out NYC mayor Eric Adams for participating in Luigi's perp walk: Luigi's lawyer is explicitly calling out Eric Adams being at the perp walk.

A crowd of people, many supporters, flocked to a New York City courthouse, where Luigi Mangione pleaded not guilty to charges of first-degree murder and terrorism in the death of UnitedHealthcare CEO Brian Thompson.

Luigi Mangione pleaded not guilty in a New York court to charges connected to the murder of UnitedHealthcare CEO Brian Thompson. CBS News' Lilia Luciano reports. Also, CBS News legal contributor Jessica Levinson has more on the case's latest turns.