Luigi Mangione appears in court to enter plea in execution of UnitedHealthcare CEO Brian Thompson

A smiling Luigi Mangione appeared in court in Manhattan Monday to plead not guilty to first-degree murder of UnitedHealthcare CEO Brian Thompson. Mangione, 26, entered Manhattan Supreme Court at 9:26 a.m. with his feet chained, wearing a maroon sweater over a white collared shirt, tan khakis, and orange prison shoes. At least two dozen women...