It seems like eons since Republican nominee Bob Dole described Bill Clinton as “my opponent, not my enemy,” but in fact he made that civilized remark in 1996. How quaint it now seems in contrast to Donald Trump, who regards his opponents (or people who simply disagree with him) as treasonous, disloyal rats and foes. In our new concluding chapter, therefore, we closely examine the process by which Trump, his administration, and his supporters fostered that view, with devastating consequences for our democracy.