Only the rights holder would have the legal right to download a copy of the works, as far as I know. The RIAA certainly doesn't have the rights to movies so tha

Only the rights holder would have the legal right to download a copy of the works, as far as I know. The RIAA certainly doesn't have the rights to movies so that's out of the question and it seems highly likely that actually downloading or uploading any of these works wouldn't be necessary for the police to investigate any crime.