&gt; people assume every problem is one to be solved through social engineering.<p>I actually believe it <i>can</i> solve many problems, but it is not a lowest-energy solution. Nationalist propaganda  requires a lot of resources, and as people are seeing that the benefits outweight the costs, they are giving up on it, i believe. I don&#x27;t know any books about this, I do think it&#x27;s an interesting subject as well.