It's not okay to act in a vindictive manner
George is at work and is told that his manager Tony has given him an awful performance review.
George wants to react to the negative review.
George goes to Tony's office and tells him that he's not happy with the performance rating and wants to appeal for an impartial review.
George runs outside into the parking lot and locates Tony's car and proceed to scratch it with his keys.
Tony understands George's frustration and is glad to see George using the built in dispute mechanisms at the company.
Tony is devastated that his expensive car has been defaced and is sad that someone hates him that much.