I don't know Andrew Mitchell, Chief Whip in the coalition government (today), but he sounds like a man who thinks that shouting at people is an effective form of communication. Unless you're in an environment that's very noisy or there is a grave risk of death, it isn't.
The Chief Whip role is infamous for its bullying nature. It seems to attract individuals who are comfortable with the hectoring and threatening approach to motivation and persuasion. For communicators such as these, it's all about the communicator and not the audience. For them, being effective means conforming to a stereotype rather than being receptive to the impact they are having. Or more dangerously, they see it as an opportunity to reveal their true colours while hiding behind the defence that the world is for grown-ups: the bully's dare.
There's no place for personal abuse in society, whether you're Chief Whip, a football fan, a business leader, or on Twitter. If Andrew Mitchell was Chief Whip in my Cabinet, he would have disappeared more quickly than a Walnut Whip.
It would be good to see our political leaders make an example of a very public offender.