For example, if I need a police officer to protect me, I would hope my attacker would RESPECT the officers’ authority.
It's that simple dynamic that has to be working. At the same time how would you de program that in a courtroom.
It can't be BOTH ways. And that's what I meant
It’s really not difficult. In time of emergency, you trust the cop to do his job. And, more often than not, they do. In a courtroom, you have to make the completely logical and rational assumption that a cop is human and just as capable of lying as any other human. A badge doesn’t magically turn somebody into a truth-telling machine.
Now, that’s not to say that a cop on the stand is necessarily lying. Only that he could be, and you have to assess his credibility the same as you would anybody else’s.