Thomas Frank revisits Richard Hofstadter's "The Paranoid Style in American Politics." He deftly applies Hofstadter's essay to some of our present-day political turbulence.
Unfortunately, Hofstadter's original, archived article is only available to subscribers of Harper's Magazine. As far as I can tell, this is the closest that you can get to it without a subscription. But I noticed that what seems to be the full text of the article has been posted here.
Toward the end of Frank's article you'll see that he mentions that Hofstadter also referred to the right-wing paranoid as a pseudo-conservative. This put me in mind of Theodor Adorno's analysis of pseudo-conservatism in The Authoritarian Personality. And so I wonder whether or not Hofstadter was familiar with this book. I assume that he was.
You can find Adorno's main discussion of pseudo-conservatism in Part IV, chapter XVII, section B, subsection 4, which, at least in my edition of The Authoritarian Personality, begins on page 675. Here's a quotation from page 676 to get you started: "The pseudoconservative is a man who, in the name of upholding traditional American values and institutions and defending them against more or less fictitious dangers, consciously or unconsciously aims at their abolition."
Update - November 30, 2015: Good news! Hofstadter's entire article is now available for free in the Harper's archive.