The art world is apparently supposed to line up behind Richard Prince. If you’re radical right now, you view intellectual property (IP) as a vestige of an archaic market strategy. You think of IP enforcement as a form of hoarding. And you think that anyone who objects, just “doesn’t get it.” And any artist who wishes to build a brand or even to get paid for serial prints (mind you, this includes some of the very radicals mentioned above!) — well, they are supposed to line up behind Patrick Cariou. If you’ve got a vested interest in a body of work, you think of appropriation artists as vermin, lazy, energy-sapping parasites. And you think that anyone who objects is an egomaniac with a crazed sense of entitlement. Want to pick a side in the debate? Here are a few things you’ll need to know.