Is gang violence being propelled by social media? In this episode, Elizabeth Vargas investigates how and why young gang members' internet feuds are erupting into real-world shootings. Focusing on the notorious life and tragic death of one legendary teenage female gang assassin in Chicago with a strong social media presence, Vargas explores how there may be a hidden pattern in the social media footprints of gang members, which can be used to help to identify potential real-world conflicts and help to stem the violence.