If you do not wish to cooperate with a police officer asking questions:
1) Ask them to identify themselves by stating the following.
“I am unsure of your uniform. If you are a law enforcement officer, please identify yourself”
2) Repeat the following sentence to every question asked.
“On the advice of my attorney, I do not answer questions from law enforcement, or agents of the state, without the presence of my attorney.”
If you are asked to identify yourself, provide your government issued identification but do not answer any question other than with the statement in #2.
Do not respond to even the simplest question. “So your eye color is brown”? May seem like a simple question and easily answered but the pattern is to ask two or three simple questions and get the person talking. From there the occasional “gotcha” question can be slipped in.
Do not forget that law enforcement is allowed to LIE to you.
An important point often overlooked.