Over the past decade or so genetics researchers have been undermining the widespread belief that groups of people differ genetically in character, temperament, or intelligence. They have shown that all human beings are incredibly similar genetically—much more so than other species of large mammals. They have revealed the folly of attributing group behavioral differences to biology rather than culture.
But that's not how many of the news stories have read. On the contrary, here are the kinds of headlines you might have seen: "RESEARCHERS FIND GENETIC MARKER UNIQUE TO AFRICANS." "ASIANS BIOLOGICALLY LESS SUSCEPTIBLE TO ALCOHOLISM." "ALL NATIVE AMERICANS DESCENDED FROM A SMALL NUMBER OF FOUNDERS." In other words, given how journalists, pundits, and bigots have interpreted genetics research, people are probably more convinced than ever that group differences are significant.