I have noticed that my brother never seems to confront those who are really unfair to him. Instead, he might punch a wall or whatever instead of going to the person who was wrong. Do you think this actually relieves his anger or does it even help at all?
Your brother seems to be using the psychological defense of displacement, which means to take out the anger on something or someone else rather than on the original person who acted unfairly. In the short-run your brother might experience some relief from this catharsis, but in the long-run, as I am sure you know, his hitting a wall will not solve the injustice. If your brother can do some forgiving and exercise this along with courage and a quest for justice, then he might be able to go to those at whom he is anger and talk it out in the hope of a fair resolution.