Article credit: Mercy for Animals Animal activists have just released the first hidden-camera footage taken inside a U.S. carbon dioxide “stunning chamber.” While these gas chambers are intended to painlessly render animals unconscious, the video shows pigs screaming and thrashing in agony as they die by asphyxiation. In October of last year, Raven Deerbrook of Direct Action Everywhere gained access to the Smithfield-owned Farmer John meatpacking plant. Located just outside