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Free Josh Wolf:

Wolf was recording a demonstration by a group of anarchists on July 8, 2005. The demonstration turned unruly, with some of the protesters vandalizing buildings and scuffling with police. Wolf posted some of the videos on his Web site.

Federal prosecutors are demanding that Wolf turn over the outtakes -- claiming to be specifically interested in the attempted burning of a police car.

Wolf's refusal to turn over his unpublished material would seem to be covered by the state's shield law.

However, federal prosecutors are arguing that the sliding of a burning mattress under a police cruiser constitutes a federal crime because the San Francisco Police Department receives money from the U.S. government. Yes, the argument is a stretch.