An Be -- one good starting-point would be to clarify subcategories of racism as systemic (institutional), social (interpersonal or individual), and cultural (group-based). BIPOC are the targets of the former subcategory, while people of every skin color can be the targets of the two latter subcategories.
We have to stop letting people define "prejudice" as an action. It isn't. Prejudice is an attitude or a passive belief. Once someone's prejudice becomes actionable or behavioral, it morphs into an "-ism." Whether an "-ism" is systemic or nonsystemic would also be an important distinction...but it's still an iteration of racism -- systemic or otherwise.