Anger as an emotion can be both constructive and destructive. When it is constructive it can spur us into motion make us prove the other person wrong, defend the victim or rise up to attack injustice.
When it is destructive it can be a very damaging force to both the the person and the target of the anger. It can cause severe internal harm to someone. The stress from anger can cause heart damage and other serious complications. It can also lead to acts that cannot be reversed such as violence to self or the other person.
So then what do you do with the anger? Try to refocus use it constructively don’t let it hurt you. If you are the target then either completely remove yourself from the other person,some cannot be reasoned with. If possible try to negotiate and find a common ground. It is difficult but can be done. Don’t let anger control you. You control it.