The Origin of Political Correctness

What is meant by the term POLITICAL CORRECTNESS?

The definition is found in four telegrams at the Truman Library and Museum in Independence, Missouri. The following are copies of the telegrams between President Harry Truman and Gen Douglas MacArthur on the day before the signing of the WWII Surrender Agreement in September 1945. The contents of the four telegrams here are exactly as received at the end of the war.  Not a word has been changed, added or deleted.

(1) Tokyo, Japan
0800-September 1,1945
To: President Harry S Truman
From: General D A MacArthur
Tomorrow we meet with those yellow-bellied bastards and sign the Surrender Documents, any last minute instructions?

(2) Washington, D C
1300-September 1, 1945
To: D A MacArthur
From: H S Truman

Congratulations, job well done, but you must tone down your obvious dislike of the Japanese when discussing the terms of the surrender with the press, because some of your remarks are fundamentally not politically correct!

(3) Tokyo, Japan
1630-September 1, 1945
To: H S Truman

From: D A MacArthur and C H Nimitz

Wilco Sir, but both Chester and I are somewhat confused, exactly what does the term politically correct mean? 
(4) Washington, D C
2120-September 1, 1945
To: D A MacArthur/C H Nimitz
From: H S Truman

Political Correctness is a doctrine, recently fostered by a delusional, illogical minority and promoted by a sick mainstream media, which holds forth the proposition that it is entirely possible to pick up a piece of shit by the clean end!
Now, with special thanks to the Truman Museum and Harry himself, we finally have a full understanding of what ‘POLITICAL CORRECTNESS’ really means.

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Contributed by Dr. James Rust, Ph.D. Physics