@engineer,
Because firing a demonstrably racist school teacher is not a result of "political correctness."
Should there be a teacher who is instructing his or her students that whites are superior to blacks, that blacks are good at sports because they have an "extra tendon," that slavery was actually a positive institution because black slave were better off on plantations then the disease infested jungles and plains of Africa,
or that the white race was created by a black scientist named Yakub, and all whites are evil because of the brutal process of converting blacks to whites, or all whites are either blatant or subtle racists, but blacks can't be racist; I would hope her or she would be immediately fired upon discovery of the practice.
I feel certain that in most of the schools around the nation, any person teaching children the first three "facts" would be, rightfully, fired for demonstrable racism. Such firing would not be a result of violating restrictions imposed by "political correctness."
I would like to think that anyone teaching the account of Yakub would be fired and for the same cause: racism. I feel sure that they would be fired, but I expect that quite often it would be for the cause of teaching absolute nonsense to kids (which of course it would be)and not specifically racism.
Not only do I seriously doubt that any teacher though has ever been fired for teaching Critical Race Theory ( a racist proposition itself) I know that it is part of the curriculum in some schools. This is a result of Political Correctness.
A middle-school teacher in Michigan was suspended for showing a video of white entertainers in black face during a lesson on racism, slavery and Jim Crow laws. An assistant principle sitting in on the class said it was "offensive and racist." None of the students (including black children) registered complaints. This injustice was a result of Political Correctness.
http://downtrend.com/robertgehl/michigan-teacher-suspended-for-showing-blackface-video-in-lesson-plan-on-racism/ wrote:Source
The terms "politically correct" or "political correctness" do not have much of a history of usage before 1990 and in the 24 years since then, the usage has been in the pejorative sense. Bill Maher did not name his television show "Politically Incorrect" because he intended for it to be a platform for intolerant, racist or homophobic rants."
Peter Hitchens (brother of Christopher) wrote in "The Abolition of Britain" that: "What Americans describe with the casual phrase ... “political correctness” is the most intolerant system of thought to dominate the British Isles since the Reformation."
"Political Correctness" is clearly distinguishable from "Moral Correctness" or "Legal Correctness" and so claims that it is based on good intent or that it has been given a bad name, fall short of the mark.
It is most often words, and sometimes images and deeds, that are ruled proper or improper based not on morality, legality or even common sense, but what is or is not acceptable within the framework of political dogma. So video of white entertainers wearing black-face is inherently offensive and racist and therefore so is any instance of its use, regardless of context.
The inanity of political correctness can even extend beyond the use of words or images that we would all agree are offensive to attach offense (no matter how tenuously) to common, or perfectly acceptable words and phrases like "brown bag" or "black hole," or "niggardly."
Political correctness would be nothing more than inane if it wasn't frequently used in an intolerant, unfair and clearly aggressive manner e.g. suspending the Michigan teacher or smearing someone's reputation.
It's not just liberals that employ political correctness, although they are its most frequent and flagrant users. The branding of the Dixie Chicks as traitors for making a critical comment about Bush during a concern in the UK is an example.
This type of behavior is not good for the free discussion of all ideas, for the victims who are caught it its cross hairs, or for our nation, and I would argue that it is the pre-cursor of the sort of brutally intolerant acts of oppression and suppression that some folks have argued are its predecessors.
Anyone who is a classical liberal should avoid it, condemn it and even to the extent that it is growing, fear it.