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

VIDEO #1 BBC REPORT: Charlie Hebdo: Paris terror attack kills 12(Links to an external site.)Links to an external site.(Links to an external site.) https://www.youtube.com/watch?v=mpvz7w6ilNk

Sony Hackers Make New Threats Ahead of 'Interview' Release(Links to an external site.) https://www.youtube.com/watch?v=3dC71IaO8ac&t=2s