Ham operators are licensed, so they know who you are already. Communication by radio of any kind will not work very well for very long anyway. Radio signals can be tracked and your location discovered. Any radio signals would have to be limited to short, coded messages on ever-changing frequencies, and there would have to be a lot of organization in place to have times and codes worked out.
Unless you have a very powerful pirate station outside the US, you're not gonna be able to continue broadcasting seditious material for very long.
For that matter, you won't last long even if you are outside the US...
