Exactly. I'm astounded at the number of replies here who think, at its root, this is about copyright or the DMCA. This is about police departments, who after exhausting all efforts to try to prevent people from recording them, have moved on to trying these kind of hacks to prevent people from publishing said recordings. They're not just innocently jamming out to a random song in the middle of a police encounter. They're clearly doing it with the intent to disrupt citizens from documenting and publishing their actions.