Using Yelling for Good
I have spotted a trend over the last 36 years when it comes to the topic of yelling in public. The trend I've noticed is that no-one ever yells anything that is useful. The yells tend to go along the lines of "Oi you person who has just driven in a car in a way that has mildly inconvenienced me, I want you to know that I am not happy with that!", albeit usually put in a way that is more pithy and sweary.