But moral outrage must be closely managed, or it can do more harm than good. Ganz, who eventually became a lecturer at Harvard’s Kennedy School, has spent years teaching people how to use their anger to effect change. Stoking the emotion is easy. Learning how to channel it to useful ends, he told me, is harder. For anger to be productive, at some point, it must stop. Victory often demands compromise. “You have to know how to arouse passions to fuel the fight, and then how to cool everyone down so they’ll accept the deal on the table,” Ganz said.

Of course this leads to all kinds of “social problems” (substance abuse, falling achievement, etc.). But any PR specialist or other propagandist knows it would be plain stupid to allow the actual policies and their roots to be discussed, or even to be visible.

So, let’s talk about something really serious, like the possibility that Black mothers don’t nurture their children because they evolved in the warm climate of Africa — real hard science, of the kind taken seriously by Malcolm Browne of the >New York Times, in the lead review mentioned earlier.

Such ideas, Browne writes, we ignore at our peril, unlike the social policies that have an overwhelming effect on the problems under discussion; these we not only can but must ignore, and he has not a word about them; not a word, for example, about the fact that in the city where he writes, forty percent of the children now live below the poverty line.