Police Brutality in SC

Yesterday's video of a South Carolina high school student being subdued by a campus security officer has gone viral. Read the article about it published on Salon today. See the video here.
Post a response to the article on your blog. What was your reaction to the video? To the article? Is there such a thing as "white privilege"? Is the author implying that all white people are racist? Are they? What responsibility do white people have in this incident and others like it, if any?