The ones that stood out to me weren't due to the potential for damage/injury but more the hypocrisy - people almost causing accidents because they themselves were making a big deal out of and busy getting angry at some kind of misdemeanour
i.e. a lady recently driving towards me on "my" side of the road while pressing her horn and shouting out of her side window at a car that had pulled out of a parking space beside her
I have a theory in life where if people get angry or abusive their point is usually invalid, and they realise that if they were in the right they would be able to get their point across without aggression ... I don't get angry at people making mistakes on the road because I know I'm not the one at fault - maybe if I was trying to do stuff wrong and someone picked me up on it I would?