Anger commonly shows up in dreams to do with patience and the digestive system. Eating while angry is very bad for your digestive system. Emotion charges the food you are eating like a homeopathic remedy. Eating in a positive frame of mind programs the food to heal your body. Eating while angry or depressed programs the food to cause problems.
An angry man in your dream can indicate your dad was an angry person. Similarly an angry woman indicates your mother was angry.