People use the term "Politically Correct" to allow themselves to say things that are wrong. In Western society there is much more freedom to say what you want, not matter how wrong. In same scale societies (Bands, Tribes, and Chiefdoms), if you offended someone in an unwarranted way, you could be possible exiled from the society, or at least face social penalties. People want this to happen in Western Society, but people say it infringes on their "Freedom of Speech"; people confuse and try to conflate the social realm of society to the state (Governing) realm, this is on both sides ("Liberals" and "Conservatives). People think that they can say anything without a repercussion in the social realm, but "Freedom of Speech" is only granted in the realm of government; also people who want to to penalize someone, they try to do it through the state, inside of making the actions a society taboo.
Also, Western society has become more acutely aware of so-called "Racial differences", even though racial differences are culturally based, and not biologically. People essentially have the same genetics, but different appearances (Due to environmental factors); these differences do not implies that anything is inherent to races, i.e. African Americans do not inherently talk in a "Black" way, the reason some African Americans speak this way is due to the culture they grew up in, and not their skin color.
This is all to say, its hard to mediate between social issues and state issues, because people are very attached to the state, in western society, even "Libertarians".