Primary and secondary isnt a value judgement, and Im not saying anger is not a justifiable emotion. But anytime you are angry, youre not REALLY angry, an emotion is triggering your fight, flight, or freeze response If someone is rude to you, the primary emotion you are likely feeling is shame, if someone is treating you unfairy it might be envy or jealousy, if someone is harming you then its fear. Anger exists to keep you safe, it just unfortunately loses a lot of effectiveness in modern society.

Again, its not a value judgement. Theres nothing wrong with, say, feeling envious of someone who isnt being bullied like you, who is innocent and unconnected to your current situation. It becomes wrong when you lash out at them.