High-profile public outbursts seem to be on the rise these days. Last week, Joe Wilson yelled “You lie!” at President Obama, then Kanye West disrupted the MTV music awards. Add to that the angry vitriol at town halls, and frenzied talk show hosts on both sides of the political spectrum, the nation seems to have lost decorum. What’s going on? Is racism at the root of it all? Or is it more complex than that?