Accused: Guilty or Innocent? S07 E04 Self-Defense Stabbing or Road Rage Killer?

A young father stabs another driver to death during a road rage incident. Claiming that his young child and girlfriend had come under attack in their car, the young father is now accused of Second-Degree Homicide. Facing ten years in prison, is he a protective father who acted in self-defense or a road rage murderer?