Have a question about how the TVTropes wiki works? No one knows this community better than the people in it, so ask away! Ask the Tropers is the page you come to when you have a question burning in your brain and the support pages didn't help.
It's not for everything, though. For a list of all the resources for your questions, click here. You can also go to this Directory thread
for ongoing cleanup projects.
I'd say so — if they're meant to be an antagonistic character and their political incorrectness is supposed to highlight it, they're fair game.
For example, in The Craft we have an Alpha Bitch character who bullies the character Rochelle, because she — in her own words — doesn't like black people. Not exactly a full on villain but still an example of this trope IMO.
"It's like...a cliff, and if I do it, I'm just gonna...fall." "I think we're already falling."
Good places to ask this type of question (whether something is a valid example of a trope) are the Trope Talk forum
in general and the Is this an example? thread in particular.
I've seen a few entries for Politically Incorrect Villain regarding characters who, while certainly not likeable, aren't actively evil. Since that page's description only makes mention of outright malevolent characters qualifying for the trope, I'd like to ask if these characters are valid examples of it.