Radio Free Europe was used by the US Government to peacefully undermine Communist governments. It did so by being a station which was not controlled by the State.
Telestreet was founded in 2002 in Bologna, Italy due to the fact that Silvio Berlusconi owns 3 out of the 4 major media networks over there.
If anyone wants to get a pirate TV station up, I'd support it. It'd be quite a technical challenge.
Word to the wise: Get the transmitter as high above the ground as possible! It'll allow the signal to cover a wider area. That's why pirate radio stations are usually found in a block of flats.