Abuse of authority.
Any other form of misbehavior might make me feel sad, or sickened, or determined to make things better; but the only time I actually feel angry at the people involved is if they sought out a position of public trust and then betrayed that trust.
I would distinguish between authorities who engage in ”bad“ behavior that’s inherent to the institutional role they’ve assumed (in which case my negative feelings are directed more toward the institution than the individual), and authorities who exploit their institutional roles to serve themselves.