How does the incident qualify as terrorism and not just an act of violence?

Introduction
Watch the following videos then respond to one of the following in your first post:How does the incident qualify as terrorism and not just an act of violence? What features, according to the course textbook – cite the page numbers – meet the definition of terrorism?
Compare the attack to the controversy surrounding the release of Sony Pictures’ film The Interview. In what ways are they similar or different? Give three reasons.