It's bad to damage someone's car.
Hank is at a bar when another man, Jim, hits on Hank's wife.
Hank wants to show Jim he dislikes what he just did.
Hank tells Jim that she's with him and tells him he doesn't appreciate having other men hit on his wife.
Hank goes outside and begins kicking and trying to dent Jim's car in an attempt to destroy it.
Jim realizes he was wrong, apologizes to Hank and says he didn't know she was taken.
Jim is horrified that Hank is responding with violence and anger which is totally disproportionate.