No, not betrayal, though I am sure that ranks highly.
The most human of actions, to me, is the yawn. Such a simple action, so common, and contagious. When I see someone yawn, it is like I become them for a moment, and know exactly, precisely, how they are feeling. It is like that yawn has forged a connection between me and them, and it is very deep.
When I see the meanest of teachers, of men, of anyone, yawn, they become different. So hard to describe, but it is like they are innocent, small, childlike.
Even when someone of authority, say, the Pope, yawns, it is so human, that it astounds me.
I tend to place figures of authority on pillars, not pedestals, just pillars, because they are higher than everyone, not just me, not anyone in particular, society as a whole.
But when they yawn in the presence of others, one is hit with the shocking realisation that they are human too.
We are all the same race.
Sometimes that can be forgotten, overlooked. Remember it.