It is terminology from Critical Race Theory, which is an ideology whose basic premise is that all white people, irrespective of their actual behavior or beliefs

It is terminology from Critical Race Theory, which is an ideology whose basic premise is that all white people, irrespective of their actual behavior or beliefs, perpetrate racism against everyone else. "Self-aware" refers to white people who realize they are racist. Edit: Removed my own opinion from this to try to make it purely factual.