Watch Live: Luigi Mangione appears in New York court

The man accused of fatally shooting UnitedHealthcare CEO Brian Thompson on a busy Manhattan street faced arraignment Monday on state murder charges just days after a dramatic return to the city to face federal counts in the case. New York state prosecutors have charged Luigi Mangione, 26, with 11 counts, including one count of first-degree murder in furtherance of terrorism and two counts of second-degree murder, one as an act of terrorism. If convicted of the state charges he could face life in prison without parole. Dozens of demonstrators gathered outside the a state criminal court in Lower Manhattan on Monday morning. One demonstrator played a trumpet and another shouted messages through a bullhorn in support of Mangione as commuters walked past, navigating the crowd and temperatures in the teens.