I haven't heard "Honky" in years.
As for calling white women "Karen", that is because of behavior, not being a white woman. Unless their entitled behavior is because they are white women. The "Karen" title has been bestowed on numerous entitled women who act like they are above the common rules. If they are challenged, they demand to speak to the manager.
"White trash" is code for poor white people who act it.
Here are a few definitions of "Karen" that turned up with a simple search.
1. What does Karen mean politically?
The term “Karen” has been cropping up in news frequently these days, and has become synonymous with the arrogance of privileged
white women. It is most commonly used to describe
white middle-class women, who become confrontational when things do not turn up the way they want.
2. What does calling someone Karen mean? Karen is a pejorative term for a woman seeming to be entitled or demanding beyond the scope of what is normal. The term also refers to memes depicting
white women who use their privilege to demand their own way.
3. Is Karen a bad word?
Karen is a pejorative term for any woman perceived as entitled or demanding beyond the scope of what is normal. The term is often portrayed in memes depicting mainly
white women who use their privilege to demand their own way. Depictions may include demanding to "speak to the manager", being racist, or sporting a particular bob cut hairstyle.
4. Are Karens always white?
They are women, almost always
white, who are entitled, often racist and determined to get what they want.
5. What are Karens memes? The company didn't pick out the name Karen at random. "Karen" has, in recent years, become a widespread meme referencing a specific type of middle-class
white woman, who exhibits behaviors that stem from privilege.
The use of the word Karen is definitely associated with
being white, is derogatory (justifiable or not), and seems to indicate an association between white and exhibiting the behavior of acting like being above common rules. Actually, anyone of any race can act like that, and non-white people of different races often do.
Thus, "Karen" is a racist word, with a slander against the white race in general.