Botero vs. Abu Ghraib

Are you familiar with the work of the Latin American artist Botero? I've always thought him as an affable sensualist with a taste for fleshy dames. Well, fleshy folk in general rendered in good natured, but slightly grotesque depictions of a comfortable, bourgeois existence.



So when I found this link on Metafilter, I was a bit shocked. Be warned, it's pretty graphic stuff. And does, in fact, provoke an appropriate level of moral revulsion. Why aren't more, or in fact any(?), American artists addressing this issue?