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".
Once this story goes viral, this officer will be forced to resign. Does anyone remember the Ryan Moats incident in Dallas a few years back?
My goal was to give you feedback that might help you have more positive interaction with police officers in the future. You seem to be describing a pattern of unsatisfactory interactions with the police... If you choose to keep butting heads with them that is your business. Personally, I find life to be challenging enough without creating additional conflicts for myself.
I have no idea what type of training police receive in nonverbal communication. I do know that if my crew and I respond to an incident and we show up with a bad attitude, people pick up on it and the call will generally not go as well as it could have otherwise.
Nearly all living creatures pick up on hostile nonverbal communication including animals and even people who appear to be unconscious. Your attitude is probably being communicated loud and clear to the officers you are coming into contact with and you are reaping the benefits whether you have "been convicted of any crime". In other words... it's probably time for you to take responsibility for your own actions and grow up.