Many villains need to cover up their terrible deeds or plans. They have crazy ideas to take over the world and have to keep their ideas under wraps to make them more loved by the populace. Sometimes, a villain needs to come up with a cover story to justify why he wiped out that village or murdered all those innocent people. This trope is not about those kinds of villains though - it is about the ones who do terrible things without trying to justify it, get caught red-handed doing something bad, or commit awful crimes - but they are still in charge.