Bipolar in disorder combined with anger is a very dangerous mix. The disordered person tends to become very volatile and can explode into a rage with little provocation. It is best for the person to avoid anything that might trigger anger until the disorder is in remission, but even then an angering stimulus can trigger another manic or depressive episode with anger as one of the troubling elements.
Bipolar people who have their condition in order have learned important lessons that can be applied to most of our experiences. For example, since we understand bipolar so well that we can function highly during depression and mania, we can also handle more intense states of anger without losing control.
As with every experience, most people can usually function fine when anger is at a very low intensity, but when the intensity of anger increases beyond their comfort zone they begin to lose the ability to choose their response to it. They act in ways that are less than optimal. They may even become a danger to themselves and others if the anger becomes too intense.