New York City sticking the National Guard on bag-checking duty for the subway system is already proving insufficient to protect people. It helps explain why people are fleeing the city.

A man was shot with his own gun on the subway during rush hour on Thursday after he allegedly initiated a confrontation with another passenger. The alleged instigator was also stabbed by a woman who was trying to stop the fight. Four shots were fired, and the subway car was “covered with blood and ballistics” when police arrived.