Not everyone is buying Mark Zuckerberg’s argument that Facebook can’t be politically biased because conservatives and liberals seem equally unhappy with the network. “This doesn’t hold water at all,” Zeynep Tufekei, associate professor at the School of Information and Library Science at the University of North Carolina, writes in The New York Times. “People across the political spectrum should be able to agree that not making it so easy, and so lucrative, for fake news to spread widely is better for all of us.”