The First FBI Director abused his power too.
Its not a good organization.
Law enforcement and espionage are inherently fraught with moral danger for the enforcers and spies, as well as danger to civil liberties. There are supposed to be checks and balances in place, such as the FISA courts and congressional oversight. When those unravel, democracy really is in danger. One day Devin Nunes will be remembered as a hero.