To dream of anger, denotes that some awful trial awaits you. Disappointments in loved ones, and broken ties, of enemies may make new attacks upon your property or character.
To dreams that friends or relatives are angry with you, while you meet their anger with composure, denotes you will mediate between opposing friends, and gain their lasting favor and gratitude.
Anger in a dream at someone you know is usually an expression of pent-up hostility toward that person. In waking you may not be able to express your anger, because you do not wish to hurt their feelings or they may be your employer. In sleep anger comes out because you have to vent it in some fashion. If you dream that someone is angry at you, then this means that you either suspect that the person in real life is angry at you, or you have that particular paranoia.
The portent of a display of anger in a dream is either good or bad, good if the anger is roused by injustice: bad if merely an exhibition of temper. To dream of striking a person in anger predicts shame through an amour.