We hosted a party at our house on 5/31/14 for a college graduation. Officers came to our door because of a report of underage drinking and upon talking to them they said there didn't seem to be an issue and left. We received an anonymous note 6/4/2014 that reads: "Video was taken of your party on Saturday. Please cease all parties immediately or video will be given to the City ATTORNEY FOR PROSECUTION!". The video was taken unknowingly and without any consent. All that were in attendance were inside the house or in the backyard and any alcohol was consumed only by those over the age of 21.Our backyard is completely fenced in and not in view of any neighbors unless they were to put a camera over the fence to record.