Roger Kimball: "The fate of free speech." "What are the major threats to free speech today? Perhaps the overarching condition that threatens free speech is the spread of political correctness. This has sharply curtailed candor about all manner of contentious subjects. It is no longer possible, in polite society, to speak frankly about race, about differences between the sexes, or a hundred other topics — so-called “climate change,” for example, or the relationship between Islam and free speech."