This is genuinely subversive art:
To me it doesn't matter that Serrano, when he shot the insipidly stupid Piss Christ, intended, in his low cunning way, to provoke controversy, and perhaps even thought among Roman Catholics and the Orthodox about the practice of using cruciform sculptures to invoke the Deity, while Rachel Stieringer was just playing a stupid Facebook joke.
Serrano sought to get rich from his photograph, and he succeeded. It was a commercial effort from start to finish, produced on the understanding that museums, and millionaires, will buy anything that halfwit art critics tell them is important because it's transgressive.
Rachel Stieringer, on the other hand, created her art, which is a thousand times more transgressive than anything Andres Serrano ever dreamed of, with no hope of commercial gain. She's suffering for her art. And she will continue to suffer.
I pass no judgment on whether Rachel Stieringer should be jailed for her art. I leave that judgment to the viewer, and to posterity.
Thanks to Reid Sartin for the pointer.