So she can't chose who she wannts to live with?
Government compels her to sublet to anyone?
She can choose, but to be "politically correct", you just can't state in writing who you choose. It's dumb, huh?
It's dumb to you.
Would you like to see in big letters in an ad, "Easy going dudes looking for black room mates only"?
I bet you would feel pretty shitty. You would probably cry up a shitstorm, and make a discrimination case, because that's how the double standard works.
In a civilized society, there are limits to what is socially acceptable to say or do. Any adult with half a brain knows that there are consequences to using free speech irresponsibly. She is more than free to make her ad the way that she did. In this litigious society, she is getting sued for it. That's the American Way ®, so you should all be very happy!
Guess what, you don't go to a cocktail party dressed in mechanics coveralls, chewing tobacco, and making redneck jokes. You don't advertise that you want a room mate who is of your preference. It's not socially acceptable, and it's laughable that you are making this a "political correctness" issue. There's a time and a place for everything, and a classified add is not it.