A second difference is that righteous anger is always controlled while sinful anger is often uncontrolled. It causes us to say and do things we are sorry for later, things we never would have said or done had we been in control. A third contrast is that righteous anger is directed toward sinful acts or unjust situations while sinful anger is often directed against people. God wants us to hate the sin but love the sinner, just as He does. And that means treating the sinner in kind and caring ways.
Sinful anger lashes out against people.
A final distinction is that righteous anger has no malice or resentment, and seeks no revenge. In fact, it takes positive action to right wrongs and heal divisions and disagreements. Sinful anger, on the other hand, harbors bitterness and seeks retaliation. He's not going to get away with that. So we make him pay.