Two possible solutions: First, if teams do change their names, during the postseason the student body could wear full headress in the stands. If teams decide to change their names, I suggest "The White Dominators." The PC crowd should love that.
"And now...your 2005 national champion Nebraska State Oppressors!"
The University of Massachusetts(UMASS) were once known as the Redmen but that was changed to Minutemen. The Minutemen name was challenged by minority students who thought the image of white men with rifles was intimidating but after heated debate the Minutemen name remains. They should have changed the name to the UMASS Debaters.