This is an interesting question. I am assuming that you are asking about the positive effects of anger, because you know that anger for the most part is not positive. With that said, there are a number of positive points of anger.
First, when there is injustice, there should be anger. I would call this righteous anger. It is the anger that emerges when there is evil, such as when the rich exploit the poor or when one group oppresses another group. In addition, there should be anger over discrimination, sexism, and the like. From this perspective, we might even say that the lack of anger is wrong.
Second, this anger can be a powerful catalyst for action. To put it another way, anger is a powerful force that can move people into doing something about the injustices of the world. For this reason, it is good to stay angry, but the key is to stay angry for the right things.
Anger is one of the manifestations of emotionality. Emotionality is a feeling which guides human behavior. wihtout emotion everyhting is static. Most of our actions are reactions to our emotions. Therefore, anger, as a manifestation of emotionality, has an important influence on our thoughts, behaviors, and actions. Let me illustrate this with one example.
Mohammad Boazizi, a Tunisian, who set himself on fire, was angry at the authorities who denied him the freedom to vendor and make a living.His anger triggered a reaction to self sacrifice. The Tunisian youth, who were angered by such a reaction, became angry at the government, and that anger triggered revolutions after revolutions. Anger has the power to trigger human actions.In general, without being angry, humanity hardly finds a cause for engaging in some action.
Anger can be a highly distressing emotion that results in all kinds of negative consequences. Yet, among the other possible stress emotions (upset, depression, grief, anxiety, and so on), anger remains the most popular and the most common. And not without reason. Anger has some appeal:
- Anger is activating and mobilizing. When you're angry, you feel as if you're doing something about what's triggering your stress. You feel there is a response you can make, a way of expending energy toward resolving the distressing situation. It can get you to take action and do something about the problem.
- Anger makes you feel powerful. Anger can make you feel like you're in charge, even when you aren't. When you tell someone off or give them a tongue-lashing, you feel stronger and in control. Anger enables you to express yourself in a forceful way.
- Anger often gets results. By becoming angry, as opposed to remaining calm and pleasant, you may get what you want. Many people are intimidated by anger and are more obliging when confronted with it than they normally would be.
- Anger is often a respected response. We often interpret anger as standing up for ourselves and not letting others take advantage of us. And other people may see it the same way. Our anger may be labeled as assertive, strong, and confident.