1st point: I actually included whistle-blowers as people who are not inherently corrupt. Those would be the people who speak out against said people, would they not?
2nd point: It's like a controlled forest fire. If you carefully maintain it and promote stability, nature can run its course without causing more of an impact to people than it should. If instead, you simply sit back and let it burn chaotically, then it's going to cause a lot of unneccessary damage to innocent people. Perhaps it's not the best metaphor, but it's the best I can come up with at the moment. Yes, no matter what you do, people are going to get hurt, but they'll be hurt a heck of a lot less if you manage the event properly.