Why is political correctness so insidious?  This is David Wheaton, host of The Christian Worldview.

Political correctness, which is rooted in marxism, could more accurately be termed truth suppression because it seeks to silence opposing viewpoints.  For example, feel a bit shy now about saying something publicly about the unbiblical nature of same-sex marriage?  Think you should keep your opinion to yourself with regard to associating Islam with terrorism?

Well, you are feeling the truth-suppressing force […]