It will be peaceful, no throwing of fake blood or anything. Here's a link to the FB event page with more info: http://www.facebook.com/?sk=events#!/event.php?eid=117511181643671
Even if you're anti-PETA you should still attend. Make your own anti-fur signs, create your own literature or use an alternative animal rights group's literature. You're not actually giving them money, you're showing your opposition to the fur industry so still come out and support the cause!