Inappropriate Used of Digital Media

There was an incident with a student who was using digital media to bully a classmate. It eventually consumed the entire class with students choosing sides.  Students were upset and angry. I was upset and felt terrible about the untrue information that was being shared about a particular student.  The parent should have been aware of the situation.  It was their phone and they had no clue that the student had been using it until the principal called the parent in for a conference