A RACIST: A racist is one who is both privileged and socialized on the basis of race by a white supremacist (racist) system. The term applies to all white people (i.e., people of European descent) living in the United States, regardless of class, gender, religion, culture or sexuality. By this definition, people of color cannot be racists, because as peoples within the U.S. system, they do not have the power to back up their prejudices, hostilities or acts of discrimination. (This does not deny the existence of such prejudices, hostilities, acts of rage or discrimination.)
Definitions by Sharon Martinas, Fourth Revision Spring 1995
From Structural Racism, by Keith Lawrence, Aspen Institute on Community Change and Terry Keleher, Applied Research Center at UC Berkeley, for the Race and Public Policy Conference 2004