For me, it's not a matter of nationalism. I mean, what is Millar anyway - Scottish? Maltese? I don't know...
Whatever nationality he is, I can understand his reaction. As our ironically named Steve Austin said, Millar is not a robot. He gets pissed off and shows it. I have no problem with that. I liked John McEnroe similarly, as embarrassing as the tantrums were sometimes! Sportsmen/women don't ask to be role models for a nations youth so I think we can cut them slack for being human and showing their passion sometimes.