I guess if you're protesting against the government, you don't have to comply with regulations and can use more power and basically the entire spectrum :)
If you have the government as adversary and no military force to back it up, you might want to reconsider doing that as it makes you very detectable from far away.
And instead of "just" getting teargassed and sent home, you get thrown to a concentration camp for organizing communications for the domestic terrorists there to overthrow the government, attack ICE, <insert whatever you want here, something you're pro- or against>.
But better having the government shooting down your 10€ ballo.. node with a F-35 instead of a 50€ node.