I know we've probably all seen this in the news, but this is worth repeating:
From, http://www.organicconsumers.org/
ANIMAL RIGHTS VIDEO EXPOSES KFC ANIMAL CRUELTY
An investigator for People for the Ethical Treatment of Animals (PETA) has captured video of workers abusing chickens at a major supplier plant for KFC. Employees were caught throwing live chickens against walls and kicking them. Eyewitness testimony also revealed workers "ripping birds' beaks off, spray painting their faces, twisting their heads off, spitting tobacco into their mouths and eyes, and breaking them in half - all while the birds are still alive." KFC awarded this same slaughterhouse with its "Supplier of the Year" award. PETA and OCA have called for a boycott on KFC until the company requires its suppliers to adhere to animal right laws.
http://www.organicconsumers.org/toxic/kfc.cfm