Like Calvin, I don't like to think of apex predators as scavengers. This is fascinating footage, but it is kind of disappointing to my childhood perceptions of white sharks, like the theories of the T. Rex being a scavenger made Calvin angry.
From a conservation standpoint, it is essential to dispel the myth of sharks as killing machines. The overwhelming majority of shark attacks on humans are accidental, and more people are killed by lightning each year than by sharks. Jaws is what we imagine a creature as awesome as the White Shark to be.
This isn't to say that shark myths shouldn't be preserved and enjoyed. Jaws was a good movie, and sharks make great antagonists in a story. These stories, however, shouldn't be used as justification for hunting sharks to the point where they are unable to sustain a healthy population.
Much in the same way that people should stop blaming violence on TV and in video games for the violence that occurs in the real world. When we're children, most of us can figure out the difference between the pretend world and reality. As long as some of us are unable to (which I am guessing is a very small minority), or, more commonly, are desperate for a scapegoat it will continue to be frustrating for those of us who have to watch these things unfold.