And, because I am reasonable I'll continue to give the benefit of the doubt. The entire purpose of this thread, to answer all your qustions about identification, is that all officers look pretty much alike. They are, shall we say, 'uniform' in appearance. If one of them is 'bad', you cannot tell by appearance. That's all! That's why evasive maneuvr's could not be contemplated, because if trouble is upon you it is too late.
Then I suppose you must approach any interaction with any cop as if all cops are bad? Since ou don't know which one is bad? I am not disputing the statement, as you cannot tell if any person, cop or otherwise, is bad or good. I also read your opening line that you do not expect to have to deal with bad cops. So, as I read it, you are simply making a statement of an abstract fact that facts support the statement that "some cops are bad." No one disputes that. Further, based on this premise, you are asking "God forbid, what if I happen upon a situation where I do run into one of the "bad" cops?" I am not offended by this question, but by some of the other more generalized statements later on in this thread, which in reality do not address the fundamental question.
Anyone with a computer can find and cite examples of bad cops. And forgive me a little laziness for not looking up this statistic, but IIRC the percentage of bad cops is roughly 5% (verify if you will, I am recalling from the academy.) The phrase "most cops" should not be applied unless it is in a positive manner, as "most cops" are in fact very "good" and professional. The phrase "a few cops" are dirty/bad/corrupt is a fine and accurate statement. Some (note that I did not say most ) on this board would do well to keep in mind that a small minority of LEOs are bad. Those of us who wear the badge would greatly appreciate that small change in rhetoric.