Man on the other hand does not and cannot know all sides, thoughts and intentions. Fourth, as a result, when we describe G-d as being very angry it is from the purest possible sense. Unlike G-d's anger, man's anger is tainted. Fifth, G-d's anger reacts from the position as the eternal Judge in fairness, in total knowledge, in absoluteness. Now, having stated these facts as a basis to understand how we can emulate G-d with the proper use of righteous anger, let's review several facts about anger.
Anger is a directional word in Hebrew.
That means anger begins with an Aleph on the right and builds to a Nun in the middle and concludes on the left with a Final Pey. Anger never reaches beyond the Pey. We read of destruction following G-d's anger which is the result of pure righteous judgment. It is not a stamp or authorization for man to react in anger with destructive force. In Hebrew there is the normal Pey and the final Pey.