When people inconvenience us, we show with our anger that we want to change them, to eliminate their freedom to choose. It would be unthinkable that my freedom to choose would be limited so I couldn't make mistakes. But I am willing to control the choices of others when they get in my way. I hold inviolable my own right to choose, but not that of others. How unspeakably selfish of me.
Anger is always selfish.
Anger is really wishing I could control the choices, and lives, of others. I want to make them change so my own life is easier, and when I can't, I'm angry. Few people see the astonishing selfishness of anger. When I'm angry, I choose to see people as objects that I have a right to manipulate. I can choose otherwise.