I picked this book up shortly after the Brendan Eich incident earlier this year. This book was written over 20 years ago but it could very well have been written yesterday. It lays out an excellent argument about why all free speech, even hateful speech, much be unrestricted. It's also very good at rebutting what Rauch calls the "humanitarian" attack on free speech, which seems to be the preferred method of attack in the last few years (in Western countries anyway). Perhaps saying that it "changed my life" is an overstatement as I've always held the belief that unrestricted free speech is the ultimate freedom, but it's allowed me to express exactly why I believe that way.