Where to go to press charges on the police for theft of an ATV?

I was traveling with atv along side the public highway on a sidewalk, so I wasn't infringing on commerical traffic. At that time I was stopped by a police officer, the officer ordered me to stop and shut off my atv. While still continuing, I asked the officer if there was a warrant for my arrest, he refused to answer and continued to order me to stop and shut the atv off. I asked him if he observed me committing any felony or crime, officer refused to answer. At which time I stopped and shut off my atv. He exited his car and stood in front of my atv on the sidewalk, and asked if I was retarded or stupid. I did not comment. officer stated why do you think you can drive the atv down public streets and side walks. I stated my inalienable rights. He processed to impound the atv without my consent and issued five tickets. I now need advice on how to press theft charges for police impounding/stealing my atv without consent.