Story here, with link to the Ft. Worth Star-Telegram.

The Ft. Worth, Texas, man had the DVD playing in his vehicle when police spotted it. He was arrested for obscene display, not having a drivers' license, and for an open alcohol container.

Should the police have acted when they saw the images on the screen? Was this an invasion of the man's privacy?

I think it was a good arrest. A car is not private space, but at best semi-private space; which means semi-public space. In order for a driver to see out, others will be able to see in. I think the same would even hold if a person watched pornography near enough an uncurtained window for someone to see in.

The argument that if you don't like it don't watch it, has only limited merit. We also do not want our children exposed to it. Watching pornography in automobiles exposes our children to the images.