A whole coterie of Silicon Valley billionaires and millionaires have lent their time and attention to Hanania, as well as elevated his work. Marc Andreessen, a powerful venture capitalist, appeared on his podcast. David Sacks, a close associate of Elon Musk, wrote a glowing endorsement of Hanania’s forthcoming book. So did Peter Thiel, the billionaire supporter of right-wing causes and organizations. “D.E.I. will never d-i-e from words alone,” wrote Thiel. “Hanania shows we need the sticks and stones of government violence to exorcise the diversity demon.” Vivek Ramaswamy, the Republican presidential candidate, also praised the book as a “devastating kill shot to the intellectual foundations of identity politics in America.”