AIBU to hate the way people confuse racism and sexism with class prejudice? To my mind, the use of the insult 'Karen', especially popular in the USA, doesn't just mean a middle-aged white woman who is arrogant, self-righteous, self absorbed, complaining, trouble-making, full-of-herself, etc. etc.
It means a middle or upper class woman with these characteristics. You won't see a working class 'Karen'. The stereotypical 'Karen' behaves as she does because she is on a power trip. Her social class advantage has gone to her head. That is why she complains in restaurants and is rude to shop assistants.
Why are people so blind to class prejudice? Why is the world so often seen only through the lens of race or sex? Is it because the powers-that-be (the 'elite') have a vested interest in deflecting and forestalling any class-based collective action or class consciousness? We are not encouraged to talk or think about class, but it is as significant as ever.