There are many expressions that the human being is capable of manifesting, depending on the situation that arises, they can be sad, happy and also feel a lot of anger. It is valid and even normal to feel at some point these types of emotions and others; People, far from being perfect, live day to day in different ways and with a strong personality that sets them apart from others.
It is good to determine if it is possible for someone to maintain a single type of emotion indefinitely, without any change; because there are people who never smile or are not happy with anything, for example. In addition, there are those who maintain a sadness reflected on their face and it is curious to know why, precisely, that is the human complexity, although it is also true that it is almost impossible for a person to be always happy or angry.
I think it's important to stop and think about what can lead a person to be so angry, to the point that it can affect others; there should be a check on those emotions. Personally, I consider that expressing oneself is good, while keeping everything in is not because having anger inside is worse and even harmful to the body; That is why I think that when they cry it is good because they let off steam, as well as when they speak and say what they feel or what happens to them.
You have to have a lot of empathy, patience and understanding because people are not easy at times. May anger be momentary and not a constant in anyone's life.