Yeah. The only time you should be afraid ... is if you committed a crime. If you support Justice, you should support the Police. The easiest thing to do, is to cooperate with the Police. They have no interest in wasting their time with you if you've done nothing wrong.
Now, if YOU have nothing to do, and just want to fuck with them, do what General Dimwit did. Come up with some clueless phrase "What's going on", "I'm an American Citizen", "I have a Right to an Attorney", or something that makes the Police think you are on Magic Mushrooms. Then, start crying and asking "Where's my Mommy", "I be scared", or maybe just pee on yourself for greater effect. Obviously, you need to capture all this on camera, or all your theatrics will go to waste.