Here is an excellent article regarding the cancer of political correctness and it's effect on America. Fascinating reading:
The Origins of Political Correctness
"Where does all this stuff that you’ve heard about this morning – the victim feminism, the gay rights movement, the invented statistics, the rewritten history, the lies, the demands, all the rest of it – where does it come from? For the first time in our history, Americans have to be fearful of what they say, of what they write, and of what they think. They have to be afraid of using the wrong word, a word denounced as offensive or insensitive, or racist, sexist, or homophobic."
"We call it “Political Correctness.” The name originated as something of a joke, literally in a comic strip, and we tend still to think of it as only half-serious. In fact, it’s deadly serious. It is the great disease of our century, the disease that has left tens of millions of people dead in Europe, in Russia, in China, indeed around the world. It is the disease of ideology. PC is not funny. PC is deadly serious."
Highly recommended reading for those who's minds remain open, very informative.