I don't trust anyone to be a police officer unless there's another police officer present certifying that they are in fact a police officer, and another police officer present certifying that that person is a police officer, and so on, up to a piece of paper listing hundreds of "root" police officers around the world that was prepared in an unspecified way by an unknown programmer involved in making whichever browser I happen to be using, and which I have not even glanced at.