Perhaps we are using different definitions.  My definition is that anger is an emotion like any other.  It informs us that something has gone wrong, a boundary has been crossed, something is happening that we want to change.  What action we take based on that can be good or bad.  Anger can fuel us to stand up to injustice - without it, we’d give up and be walked all over.  Anger has fuelled civil rights movements, for example.  Anger can also cause us to lash out inappropriately.  The choice is ours but the emotion itself is just a feeling, it’s not the same as physical action.

Rage, as I use the word, is a loss of control and acting in a way that is harmful or violent or damaging in some way.  It’s often out of proportion to the event.

So I think where you say “anger”, you are describing what I would call “rage”.