Just an interesting observation: there are countless stereotypes of authority figures yelling and screaming at those who are beneath them, as a matter of routine. Does this happen less than it used to, and that people "in authority" are now far more accountable than they used to be? To give a few examples:
Driving examiners. It used to be said that they would often be older men who were retired from the army or the police, so would have the manner to go with it; nowadays, they're often former driving instructors, and so take a more sympathetic approach.
Teachers, especially PE teachers: we all know the cliché of the sadistic PE teacher, possibly a failed sportsman or woman; I certainly experienced one like that when I was at school. Are they still like that?
Police officers: on YouTube I saw a video of several cops very politely and professionally arresting one person, taking a very long time as the person was not co-operative. One of the comments said "in the 70's, it would be have been sorted quickly by one copper and his truncheon".
Head teachers. The headmistress of my primary school was definitely "old school": she would regularly be yelling at an assembly hall of children, and dealing with children who whispered by yanking them out by the hand. Lots of children were scared of her. Are they still like that in this child-centred age that we seem to live in?
Bosses: in the old days, everyone feared "the boss". But is it now the case that most employees won't stand for being yelled at, knowing their rights?