Ego is the movement of the mind toward objects of perception in the form of grasping, and away from objects in the form of aversion. This fundamentally is all the ego is. This movement of grasping and aversion gives rise to a sense of a separate 'me,' and in turn the sense of 'me' strengthens itself this way.
Your anger is like a flower. In the beginning you may not understand the nature of your anger, or why it has come up. But if you know how to embrace it with the energy of mindfulness, it will begin to open. You may be sitting, following your breathing, or you may be practicing walking meditation to generate the energy of mindfulness and embrace your anger. After ten or twenty minutes your anger will have to open herself to you, and suddenly, you will see the true nature of your anger. It may have arisen just because of a wrong perception or the lack of skillfulness.