A week ago, I was at a tailgate in South Bend, Indiana.  I had one beer and had completely finished it, so, after holding it for awhile, I went to throw it out a few yards from the tailgate.  I threw my empty can in a trash can, turned around, and was confronted by two police officers.  They asked me for my ID.  I told them I was just throwing out an empty can, and they did not seem to care.  I was very compliant, and was issued a minor in possession.  They must have never seen me drinking, because I did not receive a minor in consumption.  I never admitted to drinking and was never breathalized.  Is there anything I could do to fight this in court?  What should I do to prepare?