"I'm going to kick your fat Maltese ass all over this goddamn street!" and "Fuck all you guys!"
It kind of sounds like, in addition to being a self-entitled asshole (he clearly was the one that wanted to go the wrong way, considering the traffic behind the other dude was backed up and there was none behind him), he has a generalized dislike towards the Maltese. It's only anecdotal evidence of course, but at least in my own mind, I'm going to chalk this up to the imperial degradation of US diplomacy. Sure, the embassy wasn't happy about the embarrassment of the video tape, but would a reasonably competent diplomatic corps have a dude like this in the first place?