Privilege plus power. If we can't agree on a definition, substitute my word for another that more closely fits the meaning. I don't care to bicker about definitions, but I hope we can both know what is meant.

This is one of the uppermost citations on the Wikipedia page for the term.

https://time.com/5857023/karen-meme-history-meaning/

"Marginal immunity" is also looking at it the wrong way. One should instead consider how a nonwhite person would be treated in the same situation. Let alone any incident involving the police in the US.