Look carefully at that image for a second. Those eyebrows aren't inside of the odd skin. I highly doubt that this skin-mask is his peeling skin, or that it is synthetic. I believe that this is, indeed, someone elses skin and eyebrows.

After a bit of digging, I found out that this 45 year old once-black pop singer lives at a place called "Neverland Ranch." A petting zoo, basically. I have to think, using Hannibal as a reference, that he is feeding the unusable remains of some of his white female victims to the animals on this "Ranch."

Remember Nicole Brown Simpson? The white woman who O.J. Simpson was accused of killing? That murder fits M.J.'s M.O. IMHO.