In an "accountability" statement on her website, which makes repeated reference to her Ph.D., [Robin] DiAngelo, 67, tells "fellow white people" that they should "always cite and give credit to the work of BIPOC people who have informed your thinking."

It doesn't matter if their contribution is just a few words. "When you use a phrase or idea you got from a BIPOC person," DiAngelo says, referring to black, indigenous, and other people of color, "credit them."

But the white diversity trainer has not always taken her own advice. According to a complaint filed last week with the University of Washington, where DiAngelo received her Ph.D. in multicultural education, she plagiarized several scholars—including two minorities—in her doctoral thesis.