“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”
- Sun Tzu

Actually believing the demonizing and scapegoating with which you paint opponents already puts you in a less tenable position. Rewriting your own history to cover your own shortcomings and deficiencies will seal your own fate when the real crisis of power does come.