Why do we prioritize human rights over those of other species? Philosopher Peter Singer dives into what he calls "speciesism," the root of the widely ignored mistreatment of animals around the world, from factory farms to product-testing facilities. He makes the case for ending the commercial exploitation of animals for food and invites everyone to reexamine the environmental and moral weight of the status quo. This conversation, hosted by head of TED Chris Anderson, was part of an exclusive TED Membership event. Visit ted.com/membership to become a TED Member. (Warning: this conversation contains images of animal cruelty.)