This is used mainly by politicians on the left side of the political spectrum.
I.E. Democrats in the United States.
What has replaced Red Baiting since the Berlin Wall fell.
A Political Sucker Punch that some conservatives used to attack and Liberals without offering any proof of the countrary.
You're not black (in the USA), you're African-American.
(As Whoopi Goldberg once commented, and I may be paraphrasing, "My ancestors didn't come through generations of the slave trade and the Civil Rights movement to end up hyphenated.")
You're not crippled, you're differently abled.
You're not a member of the Undead, you are biometrically challenged.
You're not an android, you are an artificial person.
We can't say blackboard (but we can say whiteboard.)
We can't sing Ba Ba Blacksheep (we sing Ba Ba Happy Sheep)
Martin: Teacher, I am very offended by you the chalkboard a blackboard, even though it is actually a board that is black.
Teacher: Sorry, Martin, I forgot my Political Correctness!