Social media altering street-gang culture, fueling violence

Lamanta Reese lived much of his gang life in virtual reality, posting videos on YouTube of him and others taunting rivals. He died at age 19 in the real world, bleeding from his head onto a porch on Chicago's South Side after one of those gang rivals, prosecutors say, shot him 11 times. Another possible factor in his slaying: A smiley-face emoji Reese posted that the suspected gunman may have interpreted as a slight about his mom.