I am not a lawyer. I would imagine you could be charged with 'obstruction of justice' or some other such law if you did this in the US or as a US citizen. Something to think about before doing such a thing.
edited to be more verbose
edited to be more verbose
This is the federal obstruction of justice statute, could you point out the part that applies to jamming the illegal collection of inadmissible evidence by an agency that enforces no laws or regulations and conducts no criminal or administrative investigations or proceedings?
Wikipedia link on chilling effects: https://en.wikipedia.org/wiki/Chilling_effect