If you want to debate this from an ethical standpoint, you could argue that the artists might have breached the producers' trust when they bombed the location w

If you want to debate this from an ethical standpoint, you could argue that the artists might have breached the producers' trust when they bombed the location with opposing and negative messages about the show. In an ideal scenario, these artists are encouraged to return the compensation they received if any because they should not benefit financially from their political opponents esp. when the contract was on a bona fide basis but I don't know really the details of the transaction or incident as a whole to be able to give sound advice or assessment of the situation here. As with your argument that anti-authoritarian messages are best suited to despotic regimes, from what I was able to gather about this show, I found that it's very controversial and some people believe that the producers constantly push and glamorize a mass-surveillance state and a clueless, extensive, and all-out Bush's style "War on Terrorism", I guess the artists with their act were in the ballpark of opposing and protesting tyrannical regimes as you put it when they attacked one of the propaganda channels of America's Neo-Conservatives with their political message according to at least the prevailing analysis by the proponents of this stunt.