If you want to shut down a conversation about race, just say the word “reparations.” Even black Americans are divided over the idea that money can compensate for the vestiges of an evil institution that ended 150 years ago; only 60 percent think the government should make cash payments to descendants of slaves. White Americans, on the other hand, have reached a consensus: In a YouGov poll taken shortly after the Atlantic published Ta-Nehisi Coates’s viral feature, “The Case for Reparations,” 94 percent were opposed.