My feeling is that if you are having a difficult time with the police on repeated occasions that there may be something about your mannerisms that the officers you are coming into contact with are interpreting as hostile. I have seen this at a lot of different scenes; I try to give helpful hints to people who I see who look like they are likely to get into some sort of confrontation with the police. It is human nature to pick up on nonverbal communication.
I don't care. I reject the idea that I have to walk around on eggshells hoping that I don't accidentally trigger the latent cop-rage in some homicidal badge jockey. If cops are trained to be that sensitive to perceived "hostility", then the problem lies with them, not me. Unless I am committing a crime they have no business "interpreting" my behavior.
I have had several bad experiences with police over the years -- instances where police officers have gone out of their way and made an extra effort to treat me with disrespect or to use violence against me. I have never been convicted of any crime. F--k them, and f--k their vaunted "sensitivity" to "nonverbal communication".