It comes from these wokesters' rampant desire to control THE ENTIRE NARRATIVE.

I still maintain that "prejudice" is simply an unexpressed (internalized or passive) attitude or belief -- and once that prejudice becomes ACTIONABLE or BEHAVIORAL, it accelerates into an "-ism."

How I delineate it:

Systemic Racism: governmental or institutional policies that are exclusively intended to disenfranchise BIPOC Americans in favor of White folks

Social Racism: individual nefarious actions that one person inflicts upon another, weaponizing one's racial identity against someone. White people and Black, Indigenous, & People of Color can be both the aggressors and the recipients of this.

Cultural Racism: group-based mob mentality, where social racism is extrapolated to inflict the weaponization under a "strength-in-numbers" model. Again, White people and Black, Indigenous, & People of Color can be both the aggressors and the recipients, here.

In shorthand:

Systemic Racism: Prejudice + Power

Social Racism: Prejudice + Bullying

Cultural Racism: Prejudice + Mob Mentality