Dad showed up at scene while his son had just been arrested for possession of marijuana in Harris County by the Harris County Sheriff's Department.  Dad told police officers they did not have the right to search his truck.  Dad used vulgar and racial sobriquets in raised tone of voice with deputies.  Dad's vulgar and racially insensitive remarks were not well received.  Police responded with a taser in his back, and an arrest for interference with duties of a public servant.  We were able to demonstrate that while Dad's statements may have been ignorant and inappropriate, Dad's language was protected free speech and did not constitute interference.  Case dismissed.