People need to grow up, does an artists pic offend you? There's countless pages on the internet, go find something you like instead of bitching about this ONE page on a vast ocean of pages of things.
No one cares, and they shouldn't, because if you're offended over something then find a different page, and don't visit this one. Problem solved. The internet is a vast place with so many great/wonderful/awful/scary things to see, go find something you like instead of dwelling on something you don't.
I find it interesting that "Walkies" has garnered almost no reaction, even though it depicted some pretty outrageously offensive stuff, but one word has created this sh!t storm. But I guess Sheila Broflovski of Southpark, Colorado was right when she said, “…deplorable horrific violence is okay, as long as no one says any naughty words!”