UPDATE: It appears AP pulled their copy of Piss Christ this afternoon, around the time I published.
"None of the images distributed by AP showed cartoons of the Prophet Muhammad," an Associated Press spokesman said, according to the Daily Beast. "It’s been our policy for years that we refrain from moving deliberately provocative images."
In censoring these images, AP joins a bunch of media outlets.
But in case you want to admire the "work of art" from three decades ago that consisted of a photograph of a crucifix in a vat of the photographer's urine, the AP will sell it to you.