Politics doesn't always bring the best out in people, but have you ever wondered why, or how, the left has made such a fine art of being nasty. While they don't have a monopoly on nasty by any means they seem, quite simply, to have refined the art.
I recall, as a child in the seventies, the Labour Party (or the left generally) as being less vicious than the left today. In those days a good number of Labour MPs had come from working-class backgrounds, and they seemed to have a sense of what it was to be decent, they played a hard game but there were rules. At least that's how it seemed to me.