Hockey Stick Killer

About this title

Graeme Eadie was driving his two young sons home from their grandparents' house. In the car in front, Kevin Duncan was driving dangerously with his headlights on full. When they reached an intersection, Eadie jumped out of his car, grabbed his hockey stick, and beat Duncan to death. What causes this kind of radical, crazy road rage? Is it an individual's mania, or is there a social cause?