telling someone to follow the rules is not being a Karen...however, someone calling the police on a black person building a patio in their own yard, is. However, I am not white, nor do I live in the white part of America
Karen is a pejorative slang term for an obnoxious, angry, entitled, and often racist middle-aged white woman who uses her privilege to get her way or police other people's behaviors.
As featured in memes, Karen is generally stereotyped as having a blonde bob haircut, asking to speak to retail and restaurant managers to voice complaints or make demands, and being an anti-vaxx , Generation X soccer mom.
In 2020, Karen spread as a label used to call out white women who were captured in viral videos engaging in what are widely seen as racist acts.
So, if you are going to use derogatory terms...make sure you actually understand what they mean.