One of the ways that people--voters, other politicians, and members of the media--have dealt with the rise of Donald Trump has been to dismiss him as an outlier, treating his irrationality, cruelty, and bombast as marks of his own character rather than signs of anything larger. Lawrence Grossberg's Under the Cover of Chaos makes that argument impossible. In damning detail, Grossberg here lays bare the deep roots of Trumpism in the broader history...