SeaWorld has announced it will stop breeding killer whales—nearly three years after the documentary “Blackfish” sparked intense criticism of SeaWorld’s treatment of the animals and their trainers. Since the documentary aired, SeaWorld has faced increasing pressure from animal rights activists, including PETA, People for the Ethical Treatment of Animals, to end the killer whale breeding program. SeaWorld’s announcement comes only weeks after the theme park operator acknowledged that it sent an employee to pose as an animal rights activist to infiltrate PETA. According to PETA, SeaWorld employee Paul McComb took part in numerous PETA protests against SeaWorld while undercover and repeatedly used social media in an effort to incite other activists, stating that it’s time to “grab pitchforks and torches” and time to “burn SeaWorld to the ground.”