luchog
Neo-Post-Retro-Revivalist
I didn't even know that obtaining a film of a real crime, even though the obtainee isn't connected to the crime at all, for the sheer purpose of watching it or having it, is illegal.
The specifics vary a bit by jurisdiction; but under certain circumstances, it is definitely illegal. "Withholding Evidence", "Obstruction of Justice", "Incitement to Commit a Crime", or some such. There must be knowledge and intent, it must be a crime which is either undiscovered or under investigation, and there are usually other factors as well (such as protection against self-incrimination, or incrimination of a close family member). The case of San Francisco blogger Josh Wolf is a good example. He has refused to turn over a video that he made during a protest, that federal investigators believe contains footage of a police officer being beaten (a police car was vandalized and an officer severely injured by protesters). He has claimed journalistic immunity, despite the fact that he's not a journalist. He's currently being held on charges of withholding evidence.