Bullshit. One, it's a major generalization based on, well, nothing, and two, it's not that simple. You can stand on your moral high ground all you like, but what you are suggesting is that all of the cops who do their job properly leave because they don't have the power to stop those who don't. Well, what's the result of that? More bad cops. Only bad cops.
You overly simplistic view doesn't work in practice.
You overly simplistic view doesn't work in practice.