What does Buddhism say about anger?
There’s nothing wrong with anger. Be angry, feel your anger, accept your anger. The delusion isn’t in experiencing your emotions - your emotions are real for as long as you’re still experiencing them. The delusion is the idea that if you satisfy your emotions with action, you will stop experiencing them. You won’t. As long as you still have anger in you, you will find another reason for being angry. When big reasons go away, small reasons will suffice.
This is the true meaning of avoidance in Buddhism. Trying to do something about the situation is avoidance. Because the real reason you do it is the idea that if the situation was fixed, you would experience less anger. You want to feel less of it, it doesn’t feel very nice to be angry. So you wanna do something about it. That’s avoidance - you are avoiding your own emotions.
Allow your anger to run through you in all its intensity. Let it rip. Then when you process it, you can do something about the situation, if you want, but with a clear head. Your actions should not be driven by anger.