I just watched it. Though that kid deserves a severe, disfiguring, beat-down and jail time, it is not nearly as horrific as shit that happens everyday hundreds of times over on factory farms, puppy mills, dog fighting rings, etc.
One of my biggest morale dilemmas is how I'm to weak/in love with food to stay vegan, or even vegetarian, for any substantial period of time. Though I do think a middle ground of responsible meat-eating/animal-welfare can be reached, I feel that because I am very outspoken on this subject in everyday life, being more disciplined would make my arguments carry more weight and give less ammo to opponents.