A nasty racist incident led to the culprit being thrown out of the Convention.
Then there was this:
An unscripted moment happened late this afternoon that caused the assembled mainstream media to turn away in the hope that it would disappear. As I was standing in line for a sandwich next to an Italian and a Puerto Rican correspondent, a controversy was unfolding on the floor. The RonPaulites, whose furious devotion to a single idea have made them the Ellen Jamesians of the right, were protesting a decision by RNC officials not to seat members of the Maine delegation, which was split between Paul and Romney supporters following rule changes made just prior to the convention. There were energetic shouts of “Aye!” and “Nay!” as a Puerto Rican party functionary—Zoraida Fonalledas, the chairwoman of the Committee on Permanent Organization—took her turn at the main-stage lectern. As she began speaking in her accented English, some in the crowd started shouting “U.S.A.! U.S.A.!”The chanting carried on for nearly a minute while most of the other delegates and the media stood by in stunned silence. The Puerto Rican correspondent turned to me and asked, “Is this happening?” I said I honestly didn’t know what was happening—it was astonishing to see all the brittle work of narrative construction that is a modern political convention suddenly crack before our eyes. None of us could quite believe what we were seeing: A sea of twentysomething bowties and cowboy hats morphing into frat bros apparently shrieking over (or at) a Latina.
You can watch the video on the linked site. Perhaps the chant wasn't occasioned by the Puerto Rican party functionary. But perhaps they were.
Finally, and not really from the fringes, Bill Keller writes about the crude editing of Obama's statements in a video aired at the Convention.