A person can deserve consequences and still deserve dignity.

Consequence and contempt are not a package. A person can face what they have earned, fully and without softening, and still be spoken to as someone with a future and a standing. Removing dignity adds nothing to the accountability; it mostly serves the people delivering it.

If you are on the giving end of a consequence, ask whether anything you are about to add is for effect rather than for justice. Cut that part. The remaining part is usually enough.