An animal-protection organization wants four of Canada’s major grocery chains to require their pork suppliers to change the way pigs are raised. Mercy for Animals Canada says it recorded hundreds of hours of footage showing “inhumane” animal abuse at a Manitoba pig farm this fall. The group has released a video showing sows confined to narrow metal gestation crates that don’t allow the animals to lie down or turn around, pigs with lesions on their bodies from rubbing up against the bars of the cages, employees at the farm kicking animals and throwing piglets to the ground and leaving them to die.