National Geographic: Inside Straight Edge

What makes members of the Straight Edge movement unique are their distinct rules that break from typical teenage proclivities: no drinking, no smoking, no drugs. NGC goes Inside Straight Edge to examine how this youth movement has earned a darker reputation as a hard-core gang, capable of malicious beatings and even murder. Is Straight Edge a safe refuge for those pursuing "clean" choices? Or is it a militant subculture that advocates violence?