Roger Scruton is right: we really do live in the world of John Stuart Mill. I'll admit to having mixed feelings about Mill. His defense of liberty and especially free speech is still better than most anything else out there, though its essential disconnect from Truth leaves it fatally vulnerable to those who would restrict both in the name of "progress." (Though Mill suggests in "On Liberty" that the protection of free speech will help move us toward Truth - which is, I think, true - it's not clear to me that Mill actually thinks we can ever arrive at said Truth - or that he thinks it would even be a good thing). He is, though, vastly preferable to the legions of students, faculty, and administrators on today's campuses who have no respect for liberty and see it, in fact, as merely a pretext for oppressive social constructs. (I was teaching Mill a few years ago and in our discussions of Mill's defense of free speech, I only had two students - out of seventy - defend free speech on campus. It was deeply depressing.)
So here's a cheer and a half for Mr. Mill.