Seeking Legal Representation

I'm a journalist who was falsely arrested and detained for recording footage of an accident scene that happened this past weekend. I was 25-50 feet away from the accident scene amongst other bystanders, not interfering or causing a disturbance to anyone in any way. An Austin police officer walked from the accident scene all the way over to where I was standing and ordered me to stop filming. I explained to the young officer that ordering me to cease from taking footage was not a lawful order and that there was no reasonable expectation of privacy in a public street, and that the Austin police department has been instructed that videotaping in a public place is not a crime. He arrested me on the spot and transported me to jail, where the officers completely and totally humiliated me. I was ordered to strip out of my clothes and into a filthy jumpsuit, which I refused. I repeatedly asked to see a magistrate or a judge, which they refused to do, and held me for 8-12 hours before release.