https://www.merriam-webster.com/slang/karen
What does Karen mean?
Karen is a slang term used to disparage a stereotypically middle-class, middle-aged white woman who rebukes or reports others in angry, sometimes racist public displays. More generally, it is an insult for anyone, though still typically a woman, who shows entitled behavior, especially in the form of outspoken complaints or intrusive criticism. Depending on context, it may be considered sexist.