I live in a small New England town, where the Annual Town Meeting is still the centerpiece of local government. One year I brought some Russian (formerly Soviet) generals to observe. When I asked them for their reactions, the first response was, "It was interesting to see so many ordinary people speaking their minds without fear."
This book - in a blessedly few number of pages with great narrative flow...describes the history of the First Amendment and how free speech /free press came to be a defining characteristic of American life only in the last half of the 20th century and early part of the 20th century, That historical narrative then becomes useful background for a very thought provoking discussion of the cases (Snowden, Wikileaks, and the publication thereof) that test the limits of free speech. There is no discussion of the "free speech on college campus" issue, but I'm guessing that's the sequel. Overall, a very worthwhile and interesting book on its own topic and in understanding what makes the U.S. different.