Video of subway shooting in NYC.. doesn't show the shooting

The most graphic part is where the dude gets stabbed, but you can't even really see what she has in her hand.. but yes, a lady stabbed the aggressor in the back twice, and that actually escalated the situation already brewing. The shooting happens when the person recording it is exiting the subway car. It's still disturbing though. The aggressor had the gun taken from him and the multiple shots heard (after the initial shot) were from the guy that took the gun from him. Aggressor in critical condition.