When Facebook employees confronted Mark Zuckerberg about then-candidate Trump’s vow to bar all Muslims from entering the United States, he acknowledged that it was indeed hate speech, in violation of Facebook’s policies. Nonetheless, he explained, his hands were tied. To remove the post would cost Facebook conservative users—and valuable business. It was exactly as observed by writer Upton Sinclair a century earlier: “It is difficult to get a man to understand something when his salary depends on his not understanding
