For me, I don't see the importance of the power-distinction. I think of "biased" and "racist" as both being on a continuum, and the force of hate or ignorance behind them comes from the same place in bias as it does in racism. To me it seems more like the difference is a matter of degree.

I've always thought that racism was a FORM of prejudice — as in "racial prejudice," "sexual prejudice," "class prejudice," etc. And the "-isms" that proceed from these prejudices (racism, sexism, classism, etc.) were forms of discrimination on the basis of a prejudicial worldview. Am I off base?